Each click of a knob changes the radio's
setting by the number of the knob's function. For example, each
time the left knob is clicked, 3 is added to the radio's setting.
Let's say the radio is set on 16. We move the left knob 1 click,
the middle knob 2 clicks, and the right knob 2 clicks.
What would the new setting
be if it started at 20, then the left knob was turned 5 clicks,
the middle knob 3 clicks and the right knob1 click?
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