No problem, we've got 5002 and 4208 to multiply
5002 × 4208 = 4208 × (5002)
+ 4208 × 2 what gives us 8416
+ 4208 × 00 yielding 0
+ 4208 × 000 that is equal 0
+ 4208 × 5000 resulting in 21040000

= 21048416
