Is it possible to somehow replace this expression?

Question

Sass

&:nth-child(1)
    left: 50%
    margin-left: -450px
  &:nth-child(2)
    left: 200%
    margin-left: -450px
  &:nth-child(3)
    left: 350%
    margin-left: -450px
  &:nth-child(4)
    left: 500%
    margin-left: -450px
  &:nth-child(5)
    left: 650%
    margin-left: -450px
  &:nth-child(6)
    left: 800%
    margin-left: -450px

Is it possible to write any formula in SASS, in which I specify n-elements, and she writes n-:nth-child's to me, adding 150% to each next in the left parameter, and leaving the margin-left: -450px parameter static ?
ps I heard about formulas in SASS, but I'm not familiar with them, is it possible to implement this?
pps It would also be great to see this, if possible, in JS.

Answer 1

.item
  margin-left: -450px
  @for $i from 1 through 6
    &:nth-child(#{$i})
      left: $i * 150% - 100%