You press and hold the "b" button on your left earmuff, but you have to hold it down as long as you want ANC (Automatic Noise Cancelling) to be turned off, in other words, as soon as you release the button, ANC will be turned back on. Unfortunately, this will also mute your music.
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This for loop will output:
0
2
4
The range(3) is all the integers between 0 inclusive and 3 exclusive. 0, 1, 2.
Every iterations through the for loop, we multiply the value of each number by 2 and print it to the console.
0 * 2 = 0
1 * 2 = 2
2 * 2 = 4
I hope this helps.