Along the long side of the living room at home, I walked from one end to the other, about 9 steps. My step is about 4 decimeters long, how many decimeters is the living room at home?
沿着家里客厅的长边，我从一头走到另一头，大约要走9步．我的1步大约长4分米，家里客厅大约长多少分米？
<gadget id="calculator">4 * 9</gadget>
<output>36</output>

<result>36</result>