900 grams of sugar water containing 6% sugar, how many grams of sugar should be added to increase the sugar content to 10%? (solution by equation)
含糖6%的糖水900克，要使其含糖量加大到10%，需要加糖多少克？(用方程解)
<gadget id="calculator">10 / 100</gadget>
<output>1/10 = around 0.1</output>

<gadget id="calculator">900 * (1/10)</gadget>
<output>90</output>

<gadget id="calculator">6 / 100</gadget>
<output>3/50 = around 0.06</output>

<gadget id="calculator">900 * (3/50)</gadget>
<output>54</output>

<gadget id="calculator">900 - 900 - 54</gadget>
<output>-54</output>

<gadget id="calculator">90 + (-54)</gadget>
<output>36</output>

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

<gadget id="calculator">36 / (9/10)</gadget>
<output>40</output>

<result>40</result>