There are 100 grams of sugar water with 15% sugar content. If you add 50 grams of water, how much sugar is in the sugar water?
有100克含糖15%的糖水，如果再放入50克水，那么糖水含糖多少
<gadget id="calculator">15 / 100</gadget>
<output>3/20 = around 0.15</output>

<gadget id="calculator">100 + 50</gadget>
<output>150</output>

<gadget id="calculator">(3/20) / 150</gadget>
<output>1/1_000 = around 0.001</output>

<gadget id="calculator">100 * (1/1_000)</gadget>
<output>1/10 = around 0.1</output>

<result>1/10 = around 0.1</result>