Alright, let's work through 40978493 times 63580745 step by step
40978493 × 63580745 = 63580745 × (40978493)
+ 63580745 × 3 which equals 190742235
+ 63580745 × 90 that results in 5722267050
+ 63580745 × 400 that results in 25432298000
+ 63580745 × 8000 what gives us 508645960000
+ 63580745 × 70000 which equals 4450652150000
+ 63580745 × 900000 that equals 57222670500000
+ 63580745 × 0000000 that is equal 0
+ 63580745 × 40000000 giving us 2543229800000000

= 2605443113917285
