When calculating 3.78/1.9, when the quotient is 1.9, what is the remainder?
计算3.78/1.9时，当商是1.9时，余数是多少．
<gadget id="calculator">1.9 * 1.9</gadget>
<output>3.61</output>

<gadget id="calculator">3.78 - 3.61</gadget>
<output>0.17</output>

<result>0.17</result>