The sum of the dividend, divisor and remainder is 1540. Given that the divisor is 20 and the remainder is 10, what is the quotient?
被除数、除数和余数的和是1540，已知除数是20，余数是10，那么商是多少．
<gadget id="calculator">1_540 - 20 - 10</gadget>
<output>1_510</output>

<gadget id="calculator">1_510 - 10</gadget>
<output>1_500</output>

<gadget id="calculator">1_500 / 20</gadget>
<output>75</output>

<result>75</result>