Put a number input and a button. It should only accept numbers (negative or positive integers or floats with one decimal) Each time you click on the Add counter button, it will add a new counter on the page that has a default zero value. Each counter has a Run button that clicking on it will add its step value to the current value. So if we have 3 counters with different steps it should result like this: Step: 1. Results: 0, 1, 2, 3, 4, 5 Step: 3. Results: 0, 3, 6, 9, 12 Step: -2.6. Results: 0, -2.6, -5.2, -7.8