Alright, let's work through 79908070 times 87449239 step by step
79908070 × 87449239 = 87449239 × (79908070)
+ 87449239 × 0 producing 0
+ 87449239 × 70 that equals 6121446730
+ 87449239 × 000 that equals 0
+ 87449239 × 8000 what gives us 699593912000
+ 87449239 × 00000 which equals 0
+ 87449239 × 900000 yielding 78704315100000
+ 87449239 × 9000000 that equals 787043151000000
+ 87449239 × 70000000 producing 6121446730000000

= 6987899911458730
