No problem, we've got 1991 and 8356 to multiply
1991 × 8356 = 8356 × (1991)
+ 8356 × 1 that equals 8356
+ 8356 × 90 that is equal 752040
+ 8356 × 900 yielding 7520400
+ 8356 × 1000 that equals 8356000

= 16636796
