Alright, let's work through 63429612 times 61519970 step by step
63429612 × 61519970 = 61519970 × (63429612)
+ 61519970 × 2 resulting in 123039940
+ 61519970 × 10 what gives us 615199700
+ 61519970 × 600 giving us 36911982000
+ 61519970 × 9000 that equals 553679730000
+ 61519970 × 20000 that results in 1230399400000
+ 61519970 × 400000 what gives us 24607988000000
+ 61519970 × 3000000 what gives us 184559910000000
+ 61519970 × 60000000 what gives us 3691198200000000

= 3902187827351640
