Master Li processed 780 parts and finished it in 13 days as planned, but actually finished it 3 days earlier than planned. How many more parts are actually made every day than planned?
李师傅加工780个零件，计划13天完成，实际比计划提前3天完成，实际每天比计划多做多少个零件？
<gadget id="calculator">13 - 3</gadget>
<output>10</output>

<gadget id="calculator">780 / 10</gadget>
<output>78</output>

<gadget id="calculator">780 / 13</gadget>
<output>60</output>

<gadget id="calculator">78 - 60</gadget>
<output>18</output>

<result>18</result>