A factory produces 189 parts in April, which is 39 more than March. How much more is produced in April than in March?
一个工厂，四月份生产零件189个，比三月份多生产39件，四月份比三月份多生产百分之几？
<gadget id="calculator">189 - 39</gadget>
<output>150</output>

<gadget id="calculator">39 / 150</gadget>
<output>13/50 = around 0.26</output>

<result>13/50 = around 0.26</result>