A building is 50 meters away. This building has 15 floors. Xiaoping lives on the 7th floor. How high is Xiaoping's house from the floor to the ground?
一幢楼50米，这幢楼共有15层，小萍家住7楼．小萍家的地板到地面有多高？
<gadget id="calculator">50 / 15</gadget>
<output>10/3 = around 3.333333</output>

<gadget id="calculator">7 - 1</gadget>
<output>6</output>

<gadget id="calculator">(10/3) * 6</gadget>
<output>20</output>

<result>20</result>