Xiao Liang ran on the playground and ran (1/2) km in 4 minutes. How many meters did he run on average per minute?
小亮在操场上跑步，4分钟跑了(1/2)km，他平均每分钟跑了多少米？
<gadget id="calculator">1 / 2</gadget>
<output>1/2 = around 0.5</output>

<gadget id="calculator">1_000 / 4</gadget>
<output>250</output>

<gadget id="calculator">(1/2) * 250</gadget>
<output>125</output>

<result>125</result>