Alright, let's work through 70205908 times 63967673 step by step
70205908 × 63967673 = 63967673 × (70205908)
+ 63967673 × 8 yielding 511741384
+ 63967673 × 00 that equals 0
+ 63967673 × 900 which equals 57570905700
+ 63967673 × 5000 producing 319838365000
+ 63967673 × 00000 which equals 0
+ 63967673 × 200000 resulting in 12793534600000
+ 63967673 × 0000000 producing 0
+ 63967673 × 70000000 that is equal 4477737110000000

= 4490908565612084
