Expected Waiting Time

This is a calculator application that allows you to estimate the waiting time in line.
You can estimate how long you will wait in line from "the number of people already in line" and "the number of people in line in one minute".

How to use
(1) Count the number of people in line in front of you.
(2) Count the number of people in line behind you in one minute.
　Please use the one-minute timer.
(3) Click the "Calculate" button to calculate the waiting time.

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