[bug] pipstep is incorrect in certain scenario

**Describe the bug**
When the value of `max` is over 100, and `step` is less than 1 (like 0.1), then the number of pips (pipstep) is multiplied instead of divided, so end up with thousands of pips.

**To Reproduce**
https://svelte.dev/repl/5947192ce43f47a1a728b32d733946d7?version=4.2.0

**Expected behavior**
Expect to see a reduced number of pips on the slider by default