No problem, we've got 6243 and 5680 to multiply
6243 × 5680 = 5680 × (6243)
+ 5680 × 3 what gives us 17040
+ 5680 × 40 yielding 227200
+ 5680 × 200 that equals 1136000
+ 5680 × 6000 which equals 34080000

= 35460240
