To build a road, the full length (2/5) has been dug, and there is still 330 meters away from the midpoint. How many meters have been dug?
修一条公路，已经挖了全长的(2/5)，离中点还有330米，已经挖了多少米？
<gadget id="calculator">1 / 2</gadget>
<output>1/2 = around 0.5</output>

<gadget id="calculator">2 / 5</gadget>
<output>2/5 = around 0.4</output>

<gadget id="calculator">(1/2) - (2/5)</gadget>
<output>1/10 = around 0.1</output>

<gadget id="calculator">330 / (1/10)</gadget>
<output>3_300</output>

<gadget id="calculator">3_300 * (2/5)</gadget>
<output>1_320</output>

<result>1_320</result>