Alright, let's work through 72020159 times 16605387 step by step
72020159 × 16605387 = 16605387 × (72020159)
+ 16605387 × 9 that results in 149448483
+ 16605387 × 50 producing 830269350
+ 16605387 × 100 that results in 1660538700
+ 16605387 × 0000 producing 0
+ 16605387 × 20000 that equals 332107740000
+ 16605387 × 000000 that is equal 0
+ 16605387 × 2000000 producing 33210774000000
+ 16605387 × 70000000 which equals 1162377090000000

= 1195922611996533
