Use a tractor to plow the land, plow (2/15) on the first day, and plow (1/3) more than 4 acres of the total on the second day, leaving 18 acres. How many acres are there in total?
用拖拉机耕地，第一天耕了(2/15)，第二天耕了总数的(1/3)多4公亩，还剩下18公亩，这块地共有多少公亩？
<gadget id="calculator">18 + 4</gadget>
<output>22</output>

<gadget id="calculator">2 / 15</gadget>
<output>2/15 = around 0.133333</output>

<gadget id="calculator">1 / 3</gadget>
<output>1/3 = around 0.333333</output>

<gadget id="calculator">1 - (2/15) - (1/3)</gadget>
<output>8/15 = around 0.533333</output>

<gadget id="calculator">22 / (8/15)</gadget>
<output>165/4 = around 41.25</output>

<result>165/4 = around 41.25</result>