No problem, we've got 1422 and 4509 to multiply
1422 × 4509 = 4509 × (1422)
+ 4509 × 2 that results in 9018
+ 4509 × 20 resulting in 90180
+ 4509 × 400 that equals 1803600
+ 4509 × 1000 that is equal 4509000

= 6411798
