No problem, we've got 3500 and 3620 to multiply
3500 × 3620 = 3620 × (3500)
+ 3620 × 0 resulting in 0
+ 3620 × 00 that is equal 0
+ 3620 × 500 which equals 1810000
+ 3620 × 3000 resulting in 10860000

= 12670000
