<human>: Here is a goal: Calculate a tip for a bartender.

How would you accomplish this goal?

OPTIONS:
- Take the total bill and move the decimal point to the left one spot. Then take that number and halve it, and then add it to the original number.
- Take the total bill and move the decimal point to the right one spot. Then take that number and halve it, and then add it to the original number.
<bot>: Take the total bill and move the decimal point to the left one spot. Then take that number and halve it, and then add it to the original number.