Alright, let's work through 6500 times 6123 step by step
6500 × 6123 = 6123 × (6500)
+ 6123 × 0 resulting in 0
+ 6123 × 00 yielding 0
+ 6123 × 500 that results in 3061500
+ 6123 × 6000 what gives us 36738000

= 39799500
