Alright, let's work through 72616740 times 73387133 step by step
72616740 × 73387133 = 73387133 × (72616740)
+ 73387133 × 0 that equals 0
+ 73387133 × 40 that is equal 2935485320
+ 73387133 × 700 resulting in 51370993100
+ 73387133 × 6000 giving us 440322798000
+ 73387133 × 10000 giving us 733871330000
+ 73387133 × 600000 yielding 44032279800000
+ 73387133 × 2000000 what gives us 146774266000000
+ 73387133 × 70000000 producing 5137099310000000

= 5329134356406420
