Prepare brine with 4 grams of salt. Salt accounts for (1/20) of water, how many grams of salt water can be prepared?
用4克盐配制盐水．盐占水的(1/20)，可以配制多少克盐水．
<gadget id="calculator">1 / 20</gadget>
<output>1/20 = around 0.05</output>

<gadget id="calculator">4 / (1/20)</gadget>
<output>80</output>

<gadget id="calculator">80 + 4</gadget>
<output>84</output>

<result>84</result>