Alright, let's work through 27817766 times 72157736 step by step
27817766 × 72157736 = 72157736 × (27817766)
+ 72157736 × 6 that equals 432946416
+ 72157736 × 60 that is equal 4329464160
+ 72157736 × 700 yielding 50510415200
+ 72157736 × 7000 yielding 505104152000
+ 72157736 × 10000 what gives us 721577360000
+ 72157736 × 800000 giving us 57726188800000
+ 72157736 × 7000000 giving us 505104152000000
+ 72157736 × 20000000 that results in 1443154720000000

= 2007267015137776
