Alright, let's work through 40618520 times 41536572 step by step
40618520 × 41536572 = 41536572 × (40618520)
+ 41536572 × 0 resulting in 0
+ 41536572 × 20 which equals 830731440
+ 41536572 × 500 yielding 20768286000
+ 41536572 × 8000 that is equal 332292576000
+ 41536572 × 10000 that is equal 415365720000
+ 41536572 × 600000 that results in 24921943200000
+ 41536572 × 0000000 that is equal 0
+ 41536572 × 40000000 what gives us 1661462880000000

= 1687154080513440
