Alright, let's work through 78500275 times 31799774 step by step
78500275 × 31799774 = 31799774 × (78500275)
+ 31799774 × 5 resulting in 158998870
+ 31799774 × 70 that is equal 2225984180
+ 31799774 × 200 that is equal 6359954800
+ 31799774 × 0000 resulting in 0
+ 31799774 × 00000 which equals 0
+ 31799774 × 500000 producing 15899887000000
+ 31799774 × 8000000 which equals 254398192000000
+ 31799774 × 70000000 giving us 2225984180000000

= 2496291003937850
