Every click of one of the knobs changes the number by the knobs function. Example: left knob 1 click, middle knob 2 clicks, right knob 2 clicks. The radio was set to 16.

16 + 3 = 19
19-8 -8 = 3
3 x 4 x 4 = 48

What would the new setting be if it started at 20.
Then the left knob was turned 5 clicks.
The middle knob was turned 3 clicks and the right knob was turned 1 click.

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