Alright, let's work through 7100 times 3210 step by step
7100 × 3210 = 3210 × (7100)
+ 3210 × 0 giving us 0
+ 3210 × 00 what gives us 0
+ 3210 × 100 what gives us 321000
+ 3210 × 7000 yielding 22470000

= 22791000
