Xiao Ming weighs 36 kg, which is 1/7 lighter than Xiao Ling. How much does Xiao Ling weigh?
小明体重是36千克，比小玲轻(1/7)．小玲的体重是多少？
<gadget id="calculator">1 / 7</gadget>
<output>1/7 = around 0.142857</output>

<gadget id="calculator">1 - (1/7)</gadget>
<output>6/7 = around 0.857143</output>

<gadget id="calculator">36 / (6/7)</gadget>
<output>42</output>

<result>42</result>