There are 15 stalls in a dairy farm, and there are 8 cows in each stall, and each cow produces an average of 10 liters of milk per day. How many liters of milk do the cows on this dairy farm produce on average per day?
奶牛场有15个牛栏，每个牛栏里有8头奶牛，每头奶牛平均每天产奶10升．这个奶牛场的奶牛平均每天产奶多少升？
<gadget id="calculator">8 * 15</gadget>
<output>120</output>

<gadget id="calculator">10 * 120</gadget>
<output>1_200</output>

<result>1_200</result>