You can put this solution on YOUR website! Do you mean ?
After interpreting the meaning of the symbols, it is third grader math.
We can say fancy stuff, but if you just need the answer as a number, making it sound fancy is not worth the effort.
FANCY STUFF STARTER:
It is a sum of the first 4 terms of an arithmetic sequence with first term 38 and common difference 2.
There are formulas for calculating such a sum.
It can be broken us into multiple sums: