How many grams of water are there in 150 grams of brine with a salt content of 4%?
在含盐率为4%的150克盐水中，水有多少克？
<gadget id="calculator">4 / 100</gadget>
<output>1/25 = around 0.04</output>

<gadget id="calculator">150 * (1/25)</gadget>
<output>6</output>

<gadget id="calculator">150 - 6</gadget>
<output>144</output>

<result>144</result>