Alright, let's work through 12371201 times 78206062 step by step
12371201 × 78206062 = 78206062 × (12371201)
+ 78206062 × 1 what gives us 78206062
+ 78206062 × 00 what gives us 0
+ 78206062 × 200 that results in 15641212400
+ 78206062 × 1000 yielding 78206062000
+ 78206062 × 70000 that results in 5474424340000
+ 78206062 × 300000 yielding 23461818600000
+ 78206062 × 2000000 which equals 156412124000000
+ 78206062 × 10000000 which equals 782060620000000

= 967502912420462
