There are 420 students in Sunshine Primary School. In the physical education standard test, the ratio of the number of students who have reached the standard to the number of those who have not reached the standard is 6:1. How many more students have reached the standard than those who have not?
阳光小学有学生420人，在体育达标测试中，达标人数与未达标人数比是6：1，达标的比未达标的多多少人？
<gadget id="calculator">1 + 6</gadget>
<output>7</output>

<gadget id="calculator">6 / 7</gadget>
<output>6/7 = around 0.857143</output>

<gadget id="calculator">6 + 1</gadget>
<output>7</output>

<gadget id="calculator">1 / 7</gadget>
<output>1/7 = around 0.142857</output>

<gadget id="calculator">(6/7) - (1/7)</gadget>
<output>5/7 = around 0.714286</output>

<gadget id="calculator">420 * (5/7)</gadget>
<output>300</output>

<result>300</result>