There are 900 grams of sugar water containing 6% sugar, how many grams of sugar do you need to increase the content to 10%?
有含糖6%的糖水900克，要使其含量加大到10%，需要加糖多少克？
<gadget id="calculator">6 / 100</gadget>
<output>3/50 = around 0.06</output>

<gadget id="calculator">1 - (3/50)</gadget>
<output>47/50 = around 0.94</output>

<gadget id="calculator">900 * (47/50)</gadget>
<output>846</output>

<gadget id="calculator">10 / 100</gadget>
<output>1/10 = around 0.1</output>

<gadget id="calculator">1 - (1/10)</gadget>
<output>9/10 = around 0.9</output>

<gadget id="calculator">846 / (9/10)</gadget>
<output>940</output>

<gadget id="calculator">940 - 900</gadget>
<output>40</output>

<result>40</result>