Let's calculate 1209 x 8300
1209 × 8300 = 8300 × (1209)
+ 8300 × 9 that results in 74700
+ 8300 × 00 what gives us 0
+ 8300 × 200 what gives us 1660000
+ 8300 × 1000 that results in 8300000

= 10034700
