Alright, let's work through 72663630 times 18578941 step by step
72663630 × 18578941 = 18578941 × (72663630)
+ 18578941 × 0 that results in 0
+ 18578941 × 30 what gives us 557368230
+ 18578941 × 600 producing 11147364600
+ 18578941 × 3000 that is equal 55736823000
+ 18578941 × 60000 what gives us 1114736460000
+ 18578941 × 600000 which equals 11147364600000
+ 18578941 × 2000000 which equals 37157882000000
+ 18578941 × 70000000 yielding 1300525870000000

= 1350013294615830
