A batch of rice was transported to the disaster-stricken area, and only 4 trucks were used to transport this batch of rice (2/5). How many trucks will be needed to transport the remaining rice?
一批大米运灾区，用货车运了4车，才运走这批大米的(2/5)，剩下的大米还要几车才能运完？
<gadget id="calculator">2 / 5</gadget>
<output>2/5 = around 0.4</output>

<gadget id="calculator">1 - (2/5)</gadget>
<output>3/5 = around 0.6</output>

<gadget id="calculator">(2/5) / 4</gadget>
<output>1/10 = around 0.1</output>

<gadget id="calculator">(3/5) / (1/10)</gadget>
<output>6</output>

<result>6</result>