No problem, we've got 1260 and 4066 to multiply
1260 × 4066 = 4066 × (1260)
+ 4066 × 0 yielding 0
+ 4066 × 60 that equals 243960
+ 4066 × 200 giving us 813200
+ 4066 × 1000 yielding 4066000

= 5123160
