No problem, we've got 1691 and 4222 to multiply
1691 × 4222 = 4222 × (1691)
+ 4222 × 1 which equals 4222
+ 4222 × 90 that is equal 379980
+ 4222 × 600 that equals 2533200
+ 4222 × 1000 resulting in 4222000

= 7139402
