In a Loop N times action, you need to specify, how many times you want to iterate.
Repeat Count: Value = 5, it will loop 5 times.
In a Loop with Conditions, you need to use an index for your loop. Let's call it indexCount
First, give to it a initial value: 1
In the action, select the following parameters
The last action inside your loop should be Do Calculation action, select the following parameters
Here is the workflow
Here is the log output
Hope this helps,