Xiaohong has already walked the whole distance (2/5) from home to school, and there are still 120 meters to go. How many meters has Xiaohong walked?
小红从家到学校上学，已经走了全程的(2/5)，还有120米没有走，小红已经走了多少米？
<gadget id="calculator">2 / 5</gadget>
<output>2/5 = around 0.4</output>

<gadget id="calculator">1 - (2/5)</gadget>
<output>3/5 = around 0.6</output>

<gadget id="calculator">120 / (3/5)</gadget>
<output>200</output>

<gadget id="calculator">200 - 120</gadget>
<output>80</output>

<result>80</result>