A batch of cement totaled 185 tons. 40% of the total amount was shipped on the first day, 37 tons on the second day, and the rest was shipped on the third day. What percentage of this batch of cement was shipped on the third day?
一批水泥共185吨，第一天运走总数的40%，第二天运走37吨，剩下的第三天运完，第三天运走这批水泥的百分之几？
<gadget id="calculator">40 / 100</gadget>
<output>2/5 = around 0.4</output>

<gadget id="calculator">37 / 185</gadget>
<output>1/5 = around 0.2</output>

<gadget id="calculator">1 - (2/5) - (1/5)</gadget>
<output>2/5 = around 0.4</output>

<result>2/5 = around 0.4</result>