No problem, we've got 6641 and 1185 to multiply
6641 × 1185 = 1185 × (6641)
+ 1185 × 1 what gives us 1185
+ 1185 × 40 yielding 47400
+ 1185 × 600 which equals 711000
+ 1185 × 6000 that results in 7110000

= 7869585
