multiplying my debt with a greater debt leads to no debt
You keep ignoring the issue of units. Multiplying dollars by dollars would lead to square dollars, which is a mistake (and not just because dollars are actually rectangular in shape). It is “-2 × $-2”, not “$-2 × $-2″. Money are not multiplied by money. Money are mutliplied by… number of accounts, or number of repetitions, or other dimensionless numbers.
You keep ignoring the issue of units. Multiplying dollars by dollars would lead to square dollars, which is a mistake (and not just because dollars are actually rectangular in shape). It is “-2 × $-2”, not “$-2 × $-2″. Money are not multiplied by money. Money are mutliplied by… number of accounts, or number of repetitions, or other dimensionless numbers.