$$\sum_{a=1}^{5}{60}$$
You asked:
Evaluate the expression: \(\sum_{a = 1}^{5} {60}\)
MathBot Answer:
\[\sum_{a=1}^{5} 60 = 300\]
$$\begin{aligned}\sum_{a=1}^{5} 60 &= 5 \cdot 60 \ \ \ \small{\color{grey}\text{by the identity} \sum_{n=1}^{m} C = mC}\\&= 300\end{aligned}$$