Jesus uses a couple of extreme words here, perhaps for humorous effect. Both the "he called" and "debtor" words used are not the simple, common Greek words that Jesus normally uses for these ideas, but longer, more complex words that are rarely used.  The reason for using this special word for "call" is that the call was visible, public and this word must convey this idea. 

The Greek word translated as "so" is used as the conjunction "and", but it also is used to add emphasis ("also"). 

The verb translated as "he called" means "call upon" or "summon", but it has the specific meaning to "cite or summon into court." It literally means "to call toward" or "call into the presence".  It is in the form of an adjective working on or for oneself, "summoning for himself." This is an uncommon word for Jesus to use, a complex form of the common word for "call".  As we will see, the sense of this call must be public because the steward's master knows immediately what happens at these meetings. 

The Greek word translated as "every"  means "each", "all and each severally," and "each by himself."  Here the sense is "each one" rather than "every one". 

The Greek word translated as "one " means "one" (as opposed to other numbers), "single," and "one and the same."As in English, it can be used as a pronoun, meaning a single person.

"His" is a special reflexive pronoun that means "himself", "herself," and so on.  It is not hte common form of "his" but one that means something more like "his own". 

The word translated as "lord's" is the same word that is often translated as "Lord" or "the Lord" in the NT. It also means "lord", "master of the house," and "head of the family."It was the term people used to address Christ, even though he had no formal authority. Today, we would say "boss" or "chief".

The word for "debtors" is a form of two different Greek words for "debt", something like "debt ower".  It means someone who owes something, that is, someone who was under a bond. In Christ's era, a person under a bond was almost a slave until the debt was paid.

There is no "and" here because the first verb above "called" is not active but an adjective, "calling". 

The word translated as "he said" is the most common word that means "to say," and "to speak," but it also means "to teach," which seems to be the way Christ uses it more frequently. It also has many ancillary meanings such as "to count" ("to number" or like we might say, "to recount" a story) or "to choose for yourself." Christ usually uses this word to refer to his own speaking or teaching.

The word translated as "the first" takes a lot of different types of "first" meanings from its context. Here, it could mean either the first in order or the foremost, that is, largest, debtor. 

The adjective translated as "how much"  means "of what quantity," [in distance] "how far." [of number] how far," [of time] "how long," [of value] "how much", "how great", "how many," and "how much."

"Owest thou" is the Greek verb that means "to owe", "to have to pay", "to be bound to render", "to be bound", "to be obliged," and "to account for." It is from the same root as the last part of the word for "debtor". 

"My" is the first-person possessive singular pronoun. 

The word translated as "lord" is the same word that is often translated as "Lord" or "the Lord" in the NT. It also means "lord", "master of the house," and "head of the family."