Put 7 grams of salt in a cup of 193 grams of water, find the salt content of this cup of salt water.
在一杯193克的水中放入7克盐，求这杯盐水的含盐率．
<gadget id="calculator">193 + 7</gadget>
<output>200</output>

<gadget id="calculator">7 / 200</gadget>
<output>7/200 = around 0.035</output>

<gadget id="calculator">100 / 100</gadget>
<output>1</output>

<gadget id="calculator">(7/200) * 1</gadget>
<output>7/200 = around 0.035</output>

<result>7/200 = around 0.035</result>