Alright, let's work through 72700646 times 68485713 step by step
72700646 × 68485713 = 68485713 × (72700646)
+ 68485713 × 6 what gives us 410914278
+ 68485713 × 40 giving us 2739428520
+ 68485713 × 600 that is equal 41091427800
+ 68485713 × 0000 giving us 0
+ 68485713 × 00000 producing 0
+ 68485713 × 700000 resulting in 47939999100000
+ 68485713 × 2000000 what gives us 136971426000000
+ 68485713 × 70000000 that results in 4793999910000000

= 4978955576870598
