Grandpa Zhang exercises every day. If he (3/4) walks 12 kilometers in an hour, how many kilometers does he walk in an hour at this speed?
张爷爷每天锻炼身体，若他(3/4)小时行12千米，照这样的速度，他1小时行多少千米．
<gadget id="calculator">3 / 4</gadget>
<output>3/4 = around 0.75</output>

<gadget id="calculator">12 / (3/4)</gadget>
<output>16</output>

<result>16</result>