Write an expression to solve each problem and evaluate it.
SUM-PRODUCT NUMBERS
a. Evaluate the expression below, which is the sum of the digits of 135 times the product of the digits of 135.(1 + 3 + 5)(1 ⋅ 3 ⋅ 5)
b. Write an expression representing the sum of the digits of 144 times the product of the digits of 144. Then evaluate the expression.
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