Alright, let's work through 1300 times 8870 step by step
1300 × 8870 = 8870 × (1300)
+ 8870 × 0 producing 0
+ 8870 × 00 what gives us 0
+ 8870 × 300 producing 2661000
+ 8870 × 1000 giving us 8870000

= 11531000
