Alright, let's work through 40902817 times 61988746 step by step
40902817 × 61988746 = 61988746 × (40902817)
+ 61988746 × 7 that equals 433921222
+ 61988746 × 10 giving us 619887460
+ 61988746 × 800 which equals 49590996800
+ 61988746 × 2000 that equals 123977492000
+ 61988746 × 00000 giving us 0
+ 61988746 × 900000 that results in 55789871400000
+ 61988746 × 0000000 giving us 0
+ 61988746 × 40000000 that is equal 2479549840000000

= 2535514333697482
