No problem, we've got 1680 and 2188 to multiply
1680 × 2188 = 2188 × (1680)
+ 2188 × 0 that results in 0
+ 2188 × 80 that is equal 175040
+ 2188 × 600 that results in 1312800
+ 2188 × 1000 resulting in 2188000

= 3675840
