Alright, let's work through 39381636 times 80665544 step by step
39381636 × 80665544 = 80665544 × (39381636)
+ 80665544 × 6 producing 483993264
+ 80665544 × 30 what gives us 2419966320
+ 80665544 × 600 what gives us 48399326400
+ 80665544 × 1000 producing 80665544000
+ 80665544 × 80000 resulting in 6453243520000
+ 80665544 × 300000 resulting in 24199663200000
+ 80665544 × 9000000 producing 725989896000000
+ 80665544 × 30000000 giving us 2419966320000000

= 3176741091549984
