To produce a batch of parts, each part originally used 3.4 kg of steel. After technological innovation, each part saves 0.4 kg of steel. How many steel parts can be produced now for the original production of 300 parts?
生产一批零件，原来每个零件用钢材3.4千克，技术革新后，每个零件节约钢材0.4千克，原来生产300个零件的钢材，现在可以生产多少个？
<gadget id="calculator">3.4 * 300</gadget>
<output>1_020</output>

<gadget id="calculator">3.4 - 0.4</gadget>
<output>3</output>

<gadget id="calculator">1_020 / 3</gadget>
<output>340</output>

<result>340</result>