Alright, let's work through 6720493 times 53617605 step by step
6720493 × 53617605 = 53617605 × (6720493)
+ 53617605 × 3 resulting in 160852815
+ 53617605 × 90 giving us 4825584450
+ 53617605 × 400 yielding 21447042000
+ 53617605 × 0000 which equals 0
+ 53617605 × 20000 which equals 1072352100000
+ 53617605 × 700000 which equals 37532323500000
+ 53617605 × 6000000 yielding 321705630000000

= 360336739079265
