In this exercise you'll be playing around with a remote controlled car, which you've finally saved enough money for to buy.
Cars start with full (100%) batteries. Each time you drive the car using the remote control, it covers 20 meters and drains one percent of the battery.
The remote controlled car has a fancy LED display that shows two bits of information:
"Driven <METERS> meters"
."Battery at <PERCENTAGE>%"
.If the battery is at 0%, you can't drive the car anymore and the battery display will show "Battery empty"
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These are example tasks that fit the remote control car exercise: