Zhang Qiang's mother bought him sportswear, priced at 140 yuan each. Zhang Qiang's mother did the math. With the money she brought, she could buy 6 pieces of jackets and 8 pieces of trousers. How much is each jacket more expensive than each pair of trousers.
张强的妈妈给他买运动服，标价每套140元．张强妈妈算了算，所带的钱单买上衣可以买6件，单买裤子可以买8条．每件上衣比每条裤子贵多少元．
<gadget id="calculator">8 + 6</gadget>
<output>14</output>

<gadget id="calculator">140 / 14</gadget>
<output>10</output>

<gadget id="calculator">10 * 8</gadget>
<output>80</output>

<gadget id="calculator">10 * 6</gadget>
<output>60</output>

<gadget id="calculator">80 - 60</gadget>
<output>20</output>

<result>20</result>