A worker needs to pack 63 parts into two kinds of boxes. Each large box contains 12 parts, and each small box contains 5 parts. It is necessary to prepare 4 large boxes and how many small boxes to hold these parts.
一个工人要将63个零件装进两种盒子里，每只大盒子装12个零件，每只小盒子装5个零件，需要准备4个大盒子和多少个小盒子才能把这些零件装下去．
<gadget id="calculator">12 * 4</gadget>
<output>48</output>

<gadget id="calculator">63 - 48</gadget>
<output>15</output>

<gadget id="calculator">15 / 5</gadget>
<output>3</output>

<result>3</result>