Xinhua Primary School planted a new batch of trees this spring, among which there are 12 more pine trees than cypress trees, and 1/7 fewer cypress trees than pine trees. How many newly planted cypresses are there?
新华小学今年春季新栽了一批树，其中松树比柏树多12棵，柏树比松树少(1/7)．新栽的柏树有多少棵？
<gadget id="calculator">1 / 7</gadget>
<output>1/7 = around 0.142857</output>

<gadget id="calculator">12 / (1/7)</gadget>
<output>84</output>

<gadget id="calculator">84 - 12</gadget>
<output>72</output>

<result>72</result>