Final answer:
To find the quotient of 1580 divided into 13 equal parts with a remainder of 7, subtract the remainder from the total and divide by 13, resulting in a quotient of 121.
Step-by-step explanation:
When 1580 is divided into 13 equal parts leaving a remainder of 7, we can calculate the quotient by first subtracting the remainder from the total and then dividing the result by the number of parts. Subtracting 7 from 1580 gives us 1573. Now, divide 1573 by 13 to get the quotient. The calculation will be as follows:
Thus, the correct way to write the quotient when 1580 is divided into 13 equal parts is 121, as the remainder (7) is not included in the quotient.