The digging of a canal in Xiaokang Village has completed 30% of its total length, and it is 3.2 kilometers away from the midpoint. How many kilometers has been completed?
小康村挖一条水渠，现已完成全长的30%，离中点还有3.2千米，现已完成了多少千米？
<gadget id="calculator">1 / 2</gadget>
<output>1/2 = around 0.5</output>

<gadget id="calculator">30 / 100</gadget>
<output>3/10 = around 0.3</output>

<gadget id="calculator">(1/2) - (3/10)</gadget>
<output>1/5 = around 0.2</output>

<gadget id="calculator">3.2 / (1/5)</gadget>
<output>16</output>

<gadget id="calculator">16 * (3/10)</gadget>
<output>24/5 = around 4.8</output>

<result>24/5 = around 4.8</result>