No problem, we've got 1243 and 4487 to multiply
1243 × 4487 = 4487 × (1243)
+ 4487 × 3 what gives us 13461
+ 4487 × 40 what gives us 179480
+ 4487 × 200 yielding 897400
+ 4487 × 1000 resulting in 4487000

= 5577341
