How many grams of water are there in 50 grams of salt water with a salt content of 10%.
一种含盐率为10%的盐水50克，水有多少克．
<gadget id="calculator">10 / 100</gadget>
<output>1/10 = around 0.1</output>

<gadget id="calculator">50 * (1/10)</gadget>
<output>5</output>

<gadget id="calculator">50 - 5</gadget>
<output>45</output>

<result>45</result>