In the first quarter, the communication equipment factory produced 5,600 BP machines, which was 1/7 more than telephones. How many more than telephones?
通讯器材厂第一季度生产BP机5600台，比电话机多(1/7)，比电话机多多少台？
<gadget id="calculator">1 / 7</gadget>
<output>1/7 = around 0.142857</output>

<gadget id="calculator">1 + (1/7)</gadget>
<output>8/7 = around 1.142857</output>

<gadget id="calculator">5_600 / (8/7)</gadget>
<output>4_900</output>

<gadget id="calculator">5_600 - 4_900</gadget>
<output>700</output>

<result>700</result>