Alright, let's work through 78104157 times 31317713 step by step
78104157 × 31317713 = 31317713 × (78104157)
+ 31317713 × 7 that is equal 219223991
+ 31317713 × 50 that is equal 1565885650
+ 31317713 × 100 yielding 3131771300
+ 31317713 × 4000 resulting in 125270852000
+ 31317713 × 00000 yielding 0
+ 31317713 × 100000 that equals 3131771300000
+ 31317713 × 8000000 yielding 250541704000000
+ 31317713 × 70000000 that equals 2192239910000000

= 2446043573032941
