A factory used 700 tons of water in October, saving 100 tons compared with September, how much was saved?
某厂10月份用水700吨，比9月份节约了100吨，节约了多少．
<gadget id="calculator">700 + 100</gadget>
<output>800</output>

<gadget id="calculator">100 / 800</gadget>
<output>1/8 = around 0.125</output>

<result>1/8 = around 0.125</result>