Divide 37 by twice a number, the quotient is 6 with a remainder of 1, find this number.
37除以一个数的2倍，商6余1，求这个数．
<gadget id="calculator">37 - 1</gadget>
<output>36</output>

<gadget id="calculator">6 * 2</gadget>
<output>12</output>

<gadget id="calculator">36 / 12</gadget>
<output>3</output>

<result>3</result>