Alright, let's work through 88457520 times 77900975 step by step
88457520 × 77900975 = 77900975 × (88457520)
+ 77900975 × 0 that equals 0
+ 77900975 × 20 yielding 1558019500
+ 77900975 × 500 giving us 38950487500
+ 77900975 × 7000 that results in 545306825000
+ 77900975 × 50000 that is equal 3895048750000
+ 77900975 × 400000 resulting in 31160390000000
+ 77900975 × 8000000 what gives us 623207800000000
+ 77900975 × 80000000 yielding 6232078000000000

= 6890927054082000
