Alright, let's work through 20545742 times 37642307 step by step
20545742 × 37642307 = 37642307 × (20545742)
+ 37642307 × 2 resulting in 75284614
+ 37642307 × 40 yielding 1505692280
+ 37642307 × 700 that results in 26349614900
+ 37642307 × 5000 that equals 188211535000
+ 37642307 × 40000 that results in 1505692280000
+ 37642307 × 500000 what gives us 18821153500000
+ 37642307 × 0000000 giving us 0
+ 37642307 × 20000000 giving us 752846140000000

= 773389127906794
