Master Wang processed 450 parts in three days, and 30% of them were completed on the first day. The ratio of the number of parts processed on the second day to the third day was 4:5. How many fewer parts were processed on the second day than on the third day?
王师傅三天加工了450个零件，第一天完成了30%，第二天和第三天加工个数的比是4：5，第二天比第三天少加工多少个？
<gadget id="calculator">30 / 100</gadget>
<output>3/10 = around 0.3</output>

<gadget id="calculator">450 * (3/10)</gadget>
<output>135</output>

<gadget id="calculator">450 - 135</gadget>
<output>315</output>

<gadget id="calculator">4 + 5</gadget>
<output>9</output>

<gadget id="calculator">315 / 9</gadget>
<output>35</output>

<result>35</result>