In Jesus' parable of two debtors told to Simon the Pharisee, how much did they owe?

Answer: 500 and 50 denarii

One owed 500 denarii, the other 50 (KJV: pence). Both were forgiven, and the one forgiven more would love more.

““Two men were debtors to a certain moneylender. One owed him five hundred denarii, and the other fifty. When they were unable to repay him, he forgave both of them. Which one, then, will love him more?” “I suppose the one who was forgiven more,” Simon replied. “You have judged correctly,” Jesus said.”— Luke 7:41-43 (BSB)