The distance from Xiao Ming’s home to the school is 1000 meters, and Xiao Ming walked 30%, how many meters are left?
小明家到学校的距离是1000米，小明走了30%，还有多少米没有走？
<gadget id="calculator">30 / 100</gadget>
<output>3/10 = around 0.3</output>

<gadget id="calculator">1 - (3/10)</gadget>
<output>7/10 = around 0.7</output>

<gadget id="calculator">1_000 * (7/10)</gadget>
<output>700</output>

<result>700</result>