Aunt Zhang bought 3 meters of white cloth at 2.95 yuan per meter, and 4 meters of floral cloth at 3.82 yuan per meter. She took out 30 yuan, how much should she get back?
张大妈买白布3米，每米2.95元，又买花布4米，每米3.82元，她拿出30元，应找回多少元？
<gadget id="calculator">3 * 2.95</gadget>
<output>8.85</output>

<gadget id="calculator">4 * 3.82</gadget>
<output>15.28</output>

<gadget id="calculator">8.85 + 15.28</gadget>
<output>24.13</output>

<gadget id="calculator">30 - 24.13</gadget>
<output>5.87</output>

<result>5.87</result>