I'll take it that it's implied that we're only subtracting 2 everyday, and only triple 4 once.
So, let's break this down.
Triple 4. This means to multiply by 3, or self-add 4 three times.
It should look like this: 4 + 4 + 4 or 4(3) or 4 • 3.
Let's go with the addition path, as it's easier to understand. 4 + 4 + 4. (Total of three 4's) 4 + 4 = 8 (Get rid of two 4's) We are now left with one 4. Add it to our current sum, 8. 8 + 4 = 12.
We now have 12 total. However, since we're subtracting 2 EACH day, we'll have to divide 12 by 2 to find how many days until we reach zero. 12 / 2 = 6.