No problem, we've got 1800 and 6141 to multiply
1800 × 6141 = 6141 × (1800)
+ 6141 × 0 which equals 0
+ 6141 × 00 that equals 0
+ 6141 × 800 that equals 4912800
+ 6141 × 1000 that equals 6141000

= 11053800
