wall in a school classroom is 10 meters long and 5 meters wide. The area occupied by the blackboard is 14 square meters. How many square meters is the actual wall to be painted?
学校教室的一面墙长10米，宽5米，除去黑板占的面积14平方米，要粉刷这面墙实际是多少平方米？
<gadget id="calculator">10 * 5</gadget>
<output>50</output>

<gadget id="calculator">50 - 14</gadget>
<output>36</output>

<result>36</result>