Alright, let's work through 67200156 times 20645141 step by step
67200156 × 20645141 = 20645141 × (67200156)
+ 20645141 × 6 which equals 123870846
+ 20645141 × 50 what gives us 1032257050
+ 20645141 × 100 what gives us 2064514100
+ 20645141 × 0000 which equals 0
+ 20645141 × 00000 resulting in 0
+ 20645141 × 200000 what gives us 4129028200000
+ 20645141 × 7000000 which equals 144515987000000
+ 20645141 × 60000000 that is equal 1238708460000000

= 1387356695841996
