Alright, let's work through 42906387 times 12696201 step by step
42906387 × 12696201 = 12696201 × (42906387)
+ 12696201 × 7 that is equal 88873407
+ 12696201 × 80 yielding 1015696080
+ 12696201 × 300 what gives us 3808860300
+ 12696201 × 6000 giving us 76177206000
+ 12696201 × 00000 what gives us 0
+ 12696201 × 900000 producing 11426580900000
+ 12696201 × 2000000 yielding 25392402000000
+ 12696201 × 40000000 that results in 507848040000000

= 544748113535787
