Alright, let's work through 70029999 times 76387149 step by step
70029999 × 76387149 = 76387149 × (70029999)
+ 76387149 × 9 which equals 687484341
+ 76387149 × 90 that equals 6874843410
+ 76387149 × 900 that equals 68748434100
+ 76387149 × 9000 producing 687484341000
+ 76387149 × 20000 giving us 1527742980000
+ 76387149 × 000000 which equals 0
+ 76387149 × 0000000 producing 0
+ 76387149 × 70000000 that results in 5347100430000000

= 5349391968082851
