The school divides the task of planting a batch of trees among grades four, five, and six according to the ratio of 4:5:6. The fifth grade has planted 70 trees. How many trees are there in this batch?
学校把植一批树的任务按4：5：6分给四、五、六三个年级，五年级植了70棵树，这批树共有多少棵？
<gadget id="calculator">70 / 5</gadget>
<output>14</output>

<gadget id="calculator">14 * 4</gadget>
<output>56</output>

<gadget id="calculator">14 * 6</gadget>
<output>84</output>

<gadget id="calculator">56 + 70 + 84</gadget>
<output>210</output>

<result>210</result>