There is a glass of sugar water, the sugar is 10% of the water, and 4 grams of sugar are added, the new sugar water weighs 70 grams, how many grams of water is in the original sugar water?
有一杯糖水，糖是水的10%，再放入4克糖，新糖水重70克，求原来糖水中的水有多少克？
<gadget id="calculator">70 - 4</gadget>
<output>66</output>

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

<gadget id="calculator">1 + (1/10)</gadget>
<output>11/10 = around 1.1</output>

<gadget id="calculator">66 / (11/10)</gadget>
<output>60</output>

<result>60</result>