mobile phone store bought a batch of new mobile phones, and sold (1/3) of this batch of mobile phones on the first day, and (1/4) of this batch of mobile phones on the second day, and sold a total of 70 mobile phones in two days. How many mobile phones are there in total?
某手机专卖店进了一批新手机，第一天卖了这批手机的(1/3)，第二天卖了这批手机的(1/4)，两天一共卖了70部，这批手机一共有多少部？
<gadget id="calculator">1 / 3</gadget>
<output>1/3 = around 0.333333</output>

<gadget id="calculator">1 / 4</gadget>
<output>1/4 = around 0.25</output>

<gadget id="calculator">(1/3) + (1/4)</gadget>
<output>7/12 = around 0.583333</output>

<gadget id="calculator">70 / (7/12)</gadget>
<output>120</output>

<result>120</result>