Kindergartens buy water cups for young children, and each cup is 3.5 yuan. For this kind of water cup, store A offers a 10% discount, and store B buys 8 and gets 1 free. Kindergarten needs to buy 360 water glasses, which store is cheaper and how much is it cheaper?
幼儿园为幼儿购买水杯，每只水杯3.5元．这种水杯，甲商店打九折，乙商店买8只送1只．幼儿园要买360只水杯，到哪家商店买比较便宜，便宜多少钱？
<gadget id="calculator">90 / 100</gadget>
<output>9/10 = around 0.9</output>

<gadget id="calculator">3.5 * (9/10) * 360</gadget>
<output>1_134</output>

<gadget id="calculator">8 + 1</gadget>
<output>9</output>

<gadget id="calculator">360 / 9</gadget>
<output>40</output>

<gadget id="calculator">360 - 40</gadget>
<output>320</output>

<gadget id="calculator">320 * 3.5</gadget>
<output>1_120</output>

<gadget id="calculator">1_134 - 1_120</gadget>
<output>14</output>

<result>14</result>