The ratio of divisor to dividend is 1:4, the sum of dividend, quotient and divisor is 45, what is the dividend.
除数和被除数的比是1：4，被除数、商与除数的和是45，被除数是多少．
<gadget id="calculator">45 - 4</gadget>
<output>41</output>

<gadget id="calculator">4 + 1</gadget>
<output>5</output>

<gadget id="calculator">41 / 5</gadget>
<output>41/5 = around 8.2</output>

<gadget id="calculator">(41/5) * 4</gadget>
<output>164/5 = around 32.8</output>

<result>164/5 = around 32.8</result>