Consider the following grammar augmented with semantic synthesized attributes representing the base$-10$ digits $($decimal number$).$ Add a semantic action for each production rule to compute the numerical value of the string. For example, if the string is $123$$ the numerical value is $123.$

$S{D}_{*v1}$$$\{pr{\displaystyle \underset{\phantom{}}{\overset{\phantom{}}{}}}(v1)\}$

$D_{*v1}$

$D_{*v1}$

Please put an answer in each box.