No problem, we've got 1243 and 6120 to multiply
1243 × 6120 = 6120 × (1243)
+ 6120 × 3 what gives us 18360
+ 6120 × 40 giving us 244800
+ 6120 × 200 that results in 1224000
+ 6120 × 1000 producing 6120000

= 7607160
