Alright, let's work through 63706879 times 59128632 step by step
63706879 × 59128632 = 59128632 × (63706879)
+ 59128632 × 9 which equals 532157688
+ 59128632 × 70 what gives us 4139004240
+ 59128632 × 800 what gives us 47302905600
+ 59128632 × 6000 resulting in 354771792000
+ 59128632 × 00000 which equals 0
+ 59128632 × 700000 that results in 41390042400000
+ 59128632 × 3000000 resulting in 177385896000000
+ 59128632 × 60000000 giving us 3547717920000000

= 3766900604259528
