No problem, we've got 4524 and 2103 to multiply
4524 × 2103 = 2103 × (4524)
+ 2103 × 4 what gives us 8412
+ 2103 × 20 that is equal 42060
+ 2103 × 500 that equals 1051500
+ 2103 × 4000 that is equal 8412000

= 9513972
