We're going to solve 1209 multiplied by 8180
1209 × 8180 = 8180 × (1209)
+ 8180 × 9 that is equal 73620
+ 8180 × 00 producing 0
+ 8180 × 200 that is equal 1636000
+ 8180 × 1000 yielding 8180000

= 9889620
