Xingxing Leather Factory received the task of sewing 1,500 leather skirts, 75 a day for the first 6 days, and the rest should be completed within 15 days. How many strips do the rest sew on average per day?
星星皮件厂接到缝制1500条皮裙的任务，前6天每天缝制75条，余下的要在15天内全部完成．余下的平均每天缝制多少条？
<gadget id="calculator">6 * 75</gadget>
<output>450</output>

<gadget id="calculator">1_500 - 450</gadget>
<output>1_050</output>

<gadget id="calculator">1_050 / 15</gadget>
<output>70</output>

<result>70</result>