No problem, we've got 2904 and 3945 to multiply
2904 × 3945 = 3945 × (2904)
+ 3945 × 4 that results in 15780
+ 3945 × 00 which equals 0
+ 3945 × 900 that is equal 3550500
+ 3945 × 2000 that is equal 7890000

= 11456280
