No problem, we've got 9991 and 1832 to multiply
9991 × 1832 = 1832 × (9991)
+ 1832 × 1 that equals 1832
+ 1832 × 90 what gives us 164880
+ 1832 × 900 that equals 1648800
+ 1832 × 9000 that is equal 16488000

= 18303512
