How do I move an object forward

For the class I am taking he is asking us to write a statement to move a car forward a distance equal to three times the value of the variable? The book we have does not help to understand how to do this. Please someone help.

Thank you.

[debussybunny563]

In the <object> move forward <distance> meters, put the variable in the <distance> part.

Click the arrow to the right of the variable, and select math, and * 3.