There are 12 badmintons in a tube, the price is 36 yuan, and 13 yuan for a skipping rope. The teacher wants to buy 2 badmintons and 6 skipping ropes, how much does it cost in total?
一筒羽毛球有12个，价钱是36元，一根跳绳13元．老师要买2个羽毛球和6根跳绳，一共要多少钱？
<gadget id="calculator">36 / 12</gadget>
<output>3</output>

<gadget id="calculator">3 * 2</gadget>
<output>6</output>

<gadget id="calculator">6 * 13</gadget>
<output>78</output>

<gadget id="calculator">6 + 78</gadget>
<output>84</output>

<result>84</result>