No problem, we've got 4210 and 9902 to multiply
4210 × 9902 = 9902 × (4210)
+ 9902 × 0 producing 0
+ 9902 × 10 producing 99020
+ 9902 × 200 that is equal 1980400
+ 9902 × 4000 what gives us 39608000

= 41687420
