Alright, let's work through 78202202 times 67857860 step by step
78202202 × 67857860 = 67857860 × (78202202)
+ 67857860 × 2 that equals 135715720
+ 67857860 × 00 which equals 0
+ 67857860 × 200 that equals 13571572000
+ 67857860 × 2000 yielding 135715720000
+ 67857860 × 00000 yielding 0
+ 67857860 × 200000 yielding 13571572000000
+ 67857860 × 8000000 resulting in 542862880000000
+ 67857860 × 70000000 what gives us 4750050200000000

= 5306634075007720
