To celebrate "June 1st", the school prepared balloons in three colors: red, yellow, and blue. It is known that red balloons are less than yellow balloons (1/5), and yellow balloons are 25% more than blue balloons. It is also known that there are 100 yellow balloons, how many balloons have the school prepared in total?
为庆"六一"，学校准备了红、黄、蓝三种颜色的气球，已知红色的比黄色少(1/5)，黄色的比蓝色多25%．又知黄色的有100个，学校共准备了多少个气球？
<gadget id="calculator">4 / 5</gadget>
<output>4/5 = around 0.8</output>

<gadget id="calculator">1 + (4/5) + (4/5)</gadget>
<output>13/5 = around 2.6</output>

<gadget id="calculator">100 * (13/5)</gadget>
<output>260</output>

<result>260</result>