Alright, let's work through 12870955 times 97720602 step by step
12870955 × 97720602 = 97720602 × (12870955)
+ 97720602 × 5 yielding 488603010
+ 97720602 × 50 which equals 4886030100
+ 97720602 × 900 yielding 87948541800
+ 97720602 × 0000 that equals 0
+ 97720602 × 70000 yielding 6840442140000
+ 97720602 × 800000 that is equal 78176481600000
+ 97720602 × 2000000 that is equal 195441204000000
+ 97720602 × 10000000 that equals 977206020000000

= 1257757470914910
