If you can only pay with 1 yuan, 2 yuan, and 5 yuan notes, how many different payment methods are there in total if you want to buy something that costs 13 yuan? (without consideration of change)
如果只能用1元、2元、5元的纸币付款，那么要买价格是13元的东西，一共有多少种不同的付款办法？(不考虑找钱的情况)
<gadget id="calculator">1 + 6 + 2 + 1 + 4</gadget>
<output>14</output>

<result>14</result>