15 horses fed 175.5 kg of feed for 9 days, how much feed does each horse need per day?
15匹马9天喂了175.5千克饲料，每匹马一天要多少千克饲料？
<gadget id="calculator">175.5 / 15 / 9</gadget>
<output>1.3</output>

<result>1.3</result>