Divide a number by 50, the quotient is 69, and the remainder is 10. Find this number. What is the column type.
一个数除以50，商69，余10，求这个数．列式是多少．
<gadget id="calculator">50 * 69</gadget>
<output>3_450</output>

<gadget id="calculator">3_450 + 10</gadget>
<output>3_460</output>

<result>3_460</result>