Cassidy is grounded for 14 days for lying about her report card, plus 3 extra days for each grade below a B. If Cassidy got four grades below a B, how long is she grounded for?
First find how many days Cassidy is grounded for the low grades: 4 grades * 3 days/grade = 
<gadget id="calculator">4*3</gadget>
<output>12</output>
12 days.
Then add that time to the 14 days she's grounded for lying to find the total grounding length: 12 days + 14 days = 
<gadget id="calculator">12+14</gadget>
<output>26</output>
26 days.

<result>26</result>