No problem, we've got 1994 and 4100 to multiply
1994 × 4100 = 4100 × (1994)
+ 4100 × 4 which equals 16400
+ 4100 × 90 that results in 369000
+ 4100 × 900 that results in 3690000
+ 4100 × 1000 resulting in 4100000

= 8175400
