There are 1500 parts to be processed, processing (1/3) on the first day and (2/5) of the total number on the second day, how many parts are processed in total in two days?
要加工零件1500个，第一天加工(1/3)，第二天加工总数的(2/5)，两天共加工多少个零件？
<gadget id="calculator">1 / 3</gadget>
<output>1/3 = around 0.333333</output>

<gadget id="calculator">2 / 5</gadget>
<output>2/5 = around 0.4</output>

<gadget id="calculator">(1/3) + (2/5)</gadget>
<output>11/15 = around 0.733333</output>

<gadget id="calculator">1_500 * (11/15)</gadget>
<output>1_100</output>

<result>1_100</result>