Alright, let's work through 78657825 times 48420122 step by step
78657825 × 48420122 = 48420122 × (78657825)
+ 48420122 × 5 which equals 242100610
+ 48420122 × 20 giving us 968402440
+ 48420122 × 800 that is equal 38736097600
+ 48420122 × 7000 that equals 338940854000
+ 48420122 × 50000 what gives us 2421006100000
+ 48420122 × 600000 what gives us 29052073200000
+ 48420122 × 8000000 giving us 387360976000000
+ 48420122 × 70000000 producing 3389408540000000

= 3808621482754650
