Alright, let's work through 77126742 times 73272909 step by step
77126742 × 73272909 = 73272909 × (77126742)
+ 73272909 × 2 what gives us 146545818
+ 73272909 × 40 giving us 2930916360
+ 73272909 × 700 that results in 51291036300
+ 73272909 × 6000 producing 439637454000
+ 73272909 × 20000 that equals 1465458180000
+ 73272909 × 100000 producing 7327290900000
+ 73272909 × 7000000 that results in 512910363000000
+ 73272909 × 70000000 yielding 5129103630000000

= 5651300748032478
