No problem, we've got 2159 and 1971 to multiply
2159 × 1971 = 1971 × (2159)
+ 1971 × 9 that equals 17739
+ 1971 × 50 yielding 98550
+ 1971 × 100 that results in 197100
+ 1971 × 2000 which equals 3942000

= 4255389
