No problem, we've got 1921 and 5161 to multiply
1921 × 5161 = 5161 × (1921)
+ 5161 × 1 which equals 5161
+ 5161 × 20 that equals 103220
+ 5161 × 900 that is equal 4644900
+ 5161 × 1000 that is equal 5161000

= 9914281
