Fundraising Amount Calculation

At a school, students participated in a fundraising event. Each student raised a different amount of money according to the equation:

$$ R = 5S + 15 $$

where:

• $$ R $$ represents the total amount of money raised,
• $$ S $$ represents the number of students participating.

If a total of 40 students participated, how much money was raised by all students combined?