It costs 209 yuan to buy 5 packs of coffee and 7 packs of toffee. Each pack of coffee is 13 yuan more expensive than each pack of toffee. How much is a pack of toffee and a pack of coffee?
买5包咖啡和7包奶糖共209元，其中每包咖啡比每包奶糖贵13元，一包奶糖和一包咖啡共多少元？
<gadget id="calculator">5 * 13</gadget>
<output>65</output>

<gadget id="calculator">209 - 65</gadget>
<output>144</output>

<gadget id="calculator">7 + 5</gadget>
<output>12</output>

<gadget id="calculator">144 / 12</gadget>
<output>12</output>

<gadget id="calculator">12 + 13 + 12</gadget>
<output>37</output>

<result>37</result>