No problem, we've got 4885 and 1961 to multiply
4885 × 1961 = 1961 × (4885)
+ 1961 × 5 what gives us 9805
+ 1961 × 80 producing 156880
+ 1961 × 800 that equals 1568800
+ 1961 × 4000 that results in 7844000

= 9579485
