There are 14 classes of poplar trees on the playground, and the number of pine trees is 4 times that of poplar trees. How many classes are there in total for poplar trees and pine trees?
操场上有14课杨树，松树的数目是杨树的4倍，杨树和松树一共有多少课？
<gadget id="calculator">14 * 4</gadget>
<output>56</output>

<gadget id="calculator">56 + 14</gadget>
<output>70</output>

<result>70</result>