Alright, let's work through 4002265 times 89712290 step by step
4002265 × 89712290 = 89712290 × (4002265)
+ 89712290 × 5 yielding 448561450
+ 89712290 × 60 that is equal 5382737400
+ 89712290 × 200 producing 17942458000
+ 89712290 × 2000 resulting in 179424580000
+ 89712290 × 00000 that equals 0
+ 89712290 × 000000 what gives us 0
+ 89712290 × 4000000 yielding 358849160000000

= 359052358336850
