Alright, let's work through 80140489 times 36145737 step by step
80140489 × 36145737 = 36145737 × (80140489)
+ 36145737 × 9 that results in 325311633
+ 36145737 × 80 resulting in 2891658960
+ 36145737 × 400 that is equal 14458294800
+ 36145737 × 0000 what gives us 0
+ 36145737 × 40000 resulting in 1445829480000
+ 36145737 × 100000 that is equal 3614573700000
+ 36145737 × 0000000 giving us 0
+ 36145737 × 80000000 giving us 2891658960000000

= 2896737038445393
