No problem, we've got 3521 and 9890 to multiply
3521 × 9890 = 9890 × (3521)
+ 9890 × 1 that is equal 9890
+ 9890 × 20 what gives us 197800
+ 9890 × 500 that results in 4945000
+ 9890 × 3000 which equals 29670000

= 34822690
