Xiaofang's family paid a total of 312 yuan for electricity in January and February this year. According to this calculation, how much will her family have to pay for electricity in the first half of the year?
小芳家今年一月份和二月份共交电费312元．照这样计算，她家上半年要交电费多少元？
<gadget id="calculator">312 / 2</gadget>
<output>156</output>

<gadget id="calculator">156 * 6</gadget>
<output>936</output>

<result>936</result>