Alright, let's work through 9210 times 3240 step by step
9210 × 3240 = 3240 × (9210)
+ 3240 × 0 what gives us 0
+ 3240 × 10 giving us 32400
+ 3240 × 200 giving us 648000
+ 3240 × 9000 giving us 29160000

= 29840400
