In a certain football stadium, Class A tickets accounted for 25% of the total sales, Class B tickets accounted for 40% of the total sales, Class B tickets were sold 90 more than Class A tickets, how many tickets were sold in total\\
某足球场，甲级门票占售出总数的25%，乙级门票占售出总数的40%，乙级门票比甲级门票多售出90张，共售出多少张\\
<gadget id="calculator">40 / 100</gadget>
<output>2/5 = around 0.4</output>

<gadget id="calculator">25 / 100</gadget>
<output>1/4 = around 0.25</output>

<gadget id="calculator">(2/5) - (1/4)</gadget>
<output>3/20 = around 0.15</output>

<gadget id="calculator">90 / (3/20)</gadget>
<output>600</output>

<result>600</result>