Gardeners are planting trees beside a road. 56 pine trees were planted, and 30 willows were planted four times less than pine trees. How many willow trees are planted?
园林工人在一条公路旁栽树木．栽松树56棵，栽的柳树比松树的4倍少30棵．栽的柳树有多少棵？
<gadget id="calculator">56 * 4</gadget>
<output>224</output>

<gadget id="calculator">224 - 30</gadget>
<output>194</output>

<result>194</result>