Alright, let's work through 42640527 times 88135271 step by step
42640527 × 88135271 = 88135271 × (42640527)
+ 88135271 × 7 what gives us 616946897
+ 88135271 × 20 that equals 1762705420
+ 88135271 × 500 what gives us 44067635500
+ 88135271 × 0000 which equals 0
+ 88135271 × 40000 that results in 3525410840000
+ 88135271 × 600000 yielding 52881162600000
+ 88135271 × 2000000 resulting in 176270542000000
+ 88135271 × 40000000 resulting in 3525410840000000

= 3758134402727817
