The sum of dividend, divisor and quotient is 55, and the known quotient is 7, so what is the dividend
被除数、除数、商的和是55，已知商是7，那么被除数是多少
<gadget id="calculator">55 - 7</gadget>
<output>48</output>

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

<gadget id="calculator">48 / 8</gadget>
<output>6</output>

<gadget id="calculator">7 * 6</gadget>
<output>42</output>

<result>42</result>