Shengli Road Primary School carried out donation activities, among which the fifth grade donated 576 yuan, which is 1/7 less than the sixth grade. How much is the total donation of the fifth and sixth grades?
胜利路小学开展捐款活动，其中五年级捐款576元，比六年级少捐(1/7)，五、六年级一共捐款多少元？
<gadget id="calculator">1 / 7</gadget>
<output>1/7 = around 0.142857</output>

<gadget id="calculator">1 - (1/7)</gadget>
<output>6/7 = around 0.857143</output>

<gadget id="calculator">576 / (6/7)</gadget>
<output>672</output>

<gadget id="calculator">576 + 672</gadget>
<output>1_248</output>

<result>1_248</result>