Xiaofang poured 70 grams of water into an empty cup, and put some salt. It is known that salt accounts for 12.5% of the salt water, how many grams of salt did Xiaofang put into the cup?
小芳往一个空杯子里倒了70克水，又放入一些盐．已知盐占盐水的12.5%，小芳往杯子里放入了多少克盐？
<gadget id="calculator">12.5 / 100</gadget>
<output>0.125</output>

<gadget id="calculator">1 - 0.125</gadget>
<output>0.875</output>

<gadget id="calculator">70 / 0.875</gadget>
<output>80</output>

<gadget id="calculator">80 - 70</gadget>
<output>10</output>

<result>10</result>