No problem, we've got 5241 and 4029 to multiply
5241 × 4029 = 4029 × (5241)
+ 4029 × 1 that is equal 4029
+ 4029 × 40 resulting in 161160
+ 4029 × 200 resulting in 805800
+ 4029 × 5000 what gives us 20145000

= 21115989
