The math adds up to $500.73 in this hypothetical situation because that's how the numbers added up. The single slash through the dollar sign is an accepted practice, and is commonly thought to have replaced the 2 line dollar sign. No pesos involved here.
Why is the amount due is positive $500.73? Why is the $ has 1 strike through it? Is that pesos conversion?
The math adds up to $500.73 in this hypothetical situation because that's how the numbers added up. The single slash through the dollar sign is an accepted practice, and is commonly thought to have replaced the 2 line dollar sign. No pesos involved here.