No problem, we've got 4243 and 1155 to multiply
4243 × 1155 = 1155 × (4243)
+ 1155 × 3 what gives us 3465
+ 1155 × 40 what gives us 46200
+ 1155 × 200 that is equal 231000
+ 1155 × 4000 resulting in 4620000

= 4900665
