The sum of the dividend, divisor, quotient and remainder is 53. It is known that the quotient is 7 and the remainder is 3. What is the dividend?
被除数、除数、商和余数的和是53，已知商是7，余数是3，被除数是多少．
<gadget id="calculator">53 - 3 - 7 - 3</gadget>
<output>40</output>

<gadget id="calculator">7 + 1</gadget>
<output>8</output>

<gadget id="calculator">40 / 8</gadget>
<output>5</output>

<gadget id="calculator">5 * 7</gadget>
<output>35</output>

<gadget id="calculator">35 + 3</gadget>
<output>38</output>

<result>38</result>