Alright, let's work through 66600721 times 70981262 step by step
66600721 × 70981262 = 70981262 × (66600721)
+ 70981262 × 1 what gives us 70981262
+ 70981262 × 20 that equals 1419625240
+ 70981262 × 700 yielding 49686883400
+ 70981262 × 0000 resulting in 0
+ 70981262 × 00000 yielding 0
+ 70981262 × 600000 that equals 42588757200000
+ 70981262 × 6000000 resulting in 425887572000000
+ 70981262 × 60000000 what gives us 4258875720000000

= 4727403226689902
