The garden is 150 meters long and 50 meters wide. Grandpa insists on running 5 laps every day. How many kilometers does he run every day?
花园长150米，宽50米，爷爷每天坚持跑5圈，他每天跑多少千米？
<gadget id="calculator">150 + 50</gadget>
<output>200</output>

<gadget id="calculator">5 / 1_000</gadget>
<output>1/200 = around 0.005</output>

<gadget id="calculator">200 * 2 * (1/200)</gadget>
<output>2</output>

<result>2</result>