Generated by SassMeister.com.

input.scss

@function calcWidth($var1) {
  $res: $var1 * 10;

  @return $res;
}

.my-class {
  width: calcWidth(10px);
}

output.css

.my-class {
  width: 100px;
}

settings.json

{
  "sass": {
    "compiler": "dart-sass/1.32.12",
    "extensions": {},
    "syntax": "SCSS",
    "outputStyle": "expanded"
  },
  "autoprefixer": false
}