A factory saves 5600 degrees of electricity in the first half of the month, and saves 6900 degrees of electricity in the second half of the month. If one degree of electricity is 5 cents, a ton of water is 2 yuan. How many tons of water can be bought for the factory by saving electricity this month?
某工厂上半月节约用电5600度，下半月节约用电6900度．如果一度电5角钱，一吨水2元．这个月节约的电费可为工厂买多少吨水？
<gadget id="calculator">0.5 / 2</gadget>
<output>0.25</output>

<gadget id="calculator">12_800 * 0.25</gadget>
<output>3_200</output>

<result>3_200</result>