In September this year, a total of 30 teachers from primary schools in our district participated in voluntary blood donation, and the amount of blood donation per person was 200 milliliters. How many liters of blood did the teachers donate?
今年9月，我区区直小学共有30名教师参加义务献血，每人的献血量为200毫升．老师们共献血多少升？
<gadget id="calculator">200 * 30</gadget>
<output>6_000</output>

<gadget id="calculator">6_000 / 1_000</gadget>
<output>6</output>

<result>6</result>