Alright, let's work through 72312836 times 74050543 step by step
72312836 × 74050543 = 74050543 × (72312836)
+ 74050543 × 6 resulting in 444303258
+ 74050543 × 30 what gives us 2221516290
+ 74050543 × 800 what gives us 59240434400
+ 74050543 × 2000 that results in 148101086000
+ 74050543 × 10000 that is equal 740505430000
+ 74050543 × 300000 that results in 22215162900000
+ 74050543 × 2000000 resulting in 148101086000000
+ 74050543 × 70000000 giving us 5183538010000000

= 5354804771669948
