Junhong’s house used to use about 8 tons of water per month, but now it uses about 7 tons of water per month after replacing the water-saving faucet. How much is the monthly saving compared to the original?
俊宏家原来每月用水约8t，现在更换节水龙头后每月用水约7t，每月比原来节约了百分之几？
<gadget id="calculator">8 - 7</gadget>
<output>1</output>

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

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