No problem, we've got 3980 and 1961 to multiply
3980 × 1961 = 1961 × (3980)
+ 1961 × 0 that equals 0
+ 1961 × 80 producing 156880
+ 1961 × 900 that is equal 1764900
+ 1961 × 3000 resulting in 5883000

= 7804780
