Alright, let's work through 70001489 times 80720460 step by step
70001489 × 80720460 = 80720460 × (70001489)
+ 80720460 × 9 what gives us 726484140
+ 80720460 × 80 which equals 6457636800
+ 80720460 × 400 resulting in 32288184000
+ 80720460 × 1000 which equals 80720460000
+ 80720460 × 00000 that equals 0
+ 80720460 × 000000 yielding 0
+ 80720460 × 0000000 yielding 0
+ 80720460 × 70000000 yielding 5650432200000000

= 5650552392764940
