The plastic factory planned to produce 1,300 plastic modules, and 780 pieces were produced in 6 days. According to this calculation, how many days will it take to complete the remaining production?
塑料厂计划生产1300件塑料模件，6天生产了780件．照这样计算，剩下的还要生产多少天才能完成？
<gadget id="calculator">1_300 - 780</gadget>
<output>520</output>

<gadget id="calculator">780 / 6</gadget>
<output>130</output>

<gadget id="calculator">520 / 130</gadget>
<output>4</output>

<result>4</result>