Xiaoming's father's phone bill in May is 240 yuan, and his mother's phone bill in May is his father's (2/3). Ask Xiaoming's parents how much is the phone bill in May?
小明的爸爸五月份的电话费是240元，妈妈五月份的电话费是爸爸的(2/3)．问小明的爸爸妈妈五月份的电话费一共多少元？
<gadget id="calculator">2 / 3</gadget>
<output>2/3 = around 0.666667</output>

<gadget id="calculator">240 * (2/3)</gadget>
<output>160</output>

<gadget id="calculator">240 + 160</gadget>
<output>400</output>

<result>400</result>