A and B need to process 60 parts. In the morning, A processed (1/4) of this batch of parts, and B processed (1/3) of this batch of parts. How many parts did A and B process in total in the morning? ?
甲、乙两人要加工60个零件，上午甲加工了这批零件的(1/4)，乙加工了这批零件的(1/3)，甲、乙两人上午共加工了多少个零件？
<gadget id="calculator">1 / 4</gadget>
<output>1/4 = around 0.25</output>

<gadget id="calculator">1 / 3</gadget>
<output>1/3 = around 0.333333</output>

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

<gadget id="calculator">60 * (7/12)</gadget>
<output>35</output>

<result>35</result>