Xiaohua’s family used to pay an average of 45 yuan per month for water. After using the water-saving faucet, the original water fee for one year can now be paid for 3 months more. Xiaohua’s family now has to pay an average water fee every month how much?
小华家原来平均每个月需付水费45元，使用节水龙头后，原来一年的水费，现在可以多支付3个月的水费，小华家现在平均每个月要付水费多少元？
<gadget id="calculator">12 + 3</gadget>
<output>15</output>

<gadget id="calculator">12 / 15</gadget>
<output>4/5 = around 0.8</output>

<gadget id="calculator">45 * (4/5)</gadget>
<output>36</output>

<result>36</result>