Alright, let's work through 3520124 times 72641968 step by step
3520124 × 72641968 = 72641968 × (3520124)
+ 72641968 × 4 that is equal 290567872
+ 72641968 × 20 resulting in 1452839360
+ 72641968 × 100 resulting in 7264196800
+ 72641968 × 0000 that is equal 0
+ 72641968 × 20000 that results in 1452839360000
+ 72641968 × 500000 what gives us 36320984000000
+ 72641968 × 3000000 what gives us 217925904000000

= 255708734964032
