After the technological innovation of the machinery factory, 4 tons of steel are saved every day. The steel that used to be used for 10 days can now be used for 14 days. How many tons of steel are used every day?
机械厂技术革新后，每天节约钢材4吨，原来用10天的钢材，现在可用14天，现在每天用钢材多少吨？
<gadget id="calculator">14 - 10</gadget>
<output>4</output>

<gadget id="calculator">10 / 4</gadget>
<output>5/2 = around 2.5</output>

<gadget id="calculator">4 * (5/2)</gadget>
<output>10</output>

<result>10</result>