Alright, let's work through 74715474 times 81293409 step by step
74715474 × 81293409 = 81293409 × (74715474)
+ 81293409 × 4 which equals 325173636
+ 81293409 × 70 resulting in 5690538630
+ 81293409 × 400 what gives us 32517363600
+ 81293409 × 5000 which equals 406467045000
+ 81293409 × 10000 what gives us 812934090000
+ 81293409 × 700000 what gives us 56905386300000
+ 81293409 × 4000000 that results in 325173636000000
+ 81293409 × 70000000 that results in 5690538630000000

= 6073875586510866
