Xiaohong goes to the store to buy a box of flower balls and a box of white balls. The quantity of the two boxes of balls is equal. For the New Year's discount, the price of the two balls is 4 yuan and 8 balls. As a result, Xiaohong spent 5 yuan less. So, how many balls did she buy in total?
小红到商店买一盒花球，一盒白球，两盒球的数量相等，花球原价是2元钱3个，白球原价是2元钱5个．新年优惠，两种球的售价都是4元钱8个，结果小红少花了5元钱，那么，她一共买了多少个球？
<gadget id="calculator">2 / 3</gadget>
<output>2/3 = around 0.666667</output>

<gadget id="calculator">1 / 2</gadget>
<output>1/2 = around 0.5</output>

<gadget id="calculator">2 / 5</gadget>
<output>2/5 = around 0.4</output>

<gadget id="calculator">(1/2) - (2/5)</gadget>
<output>1/10 = around 0.1</output>

<gadget id="calculator">(2/3) - (1/2) - (1/10)</gadget>
<output>1/15 = around 0.066667</output>

<gadget id="calculator">5 / (1/15)</gadget>
<output>75</output>

<gadget id="calculator">75 * 2</gadget>
<output>150</output>

<result>150</result>