Alright, let's work through 72190640 times 52143620 step by step
72190640 × 52143620 = 52143620 × (72190640)
+ 52143620 × 0 what gives us 0
+ 52143620 × 40 that is equal 2085744800
+ 52143620 × 600 yielding 31286172000
+ 52143620 × 0000 that is equal 0
+ 52143620 × 90000 resulting in 4692925800000
+ 52143620 × 100000 that results in 5214362000000
+ 52143620 × 2000000 resulting in 104287240000000
+ 52143620 × 70000000 that results in 3650053400000000

= 3764281299716800
