Calculate Weighted Average

Would it be correct to calculate the weighted average of the following scores by multiplying the score by the weight for all and then adding this up, or am I supposed to divide by something?

Ex.

Intern had 4 rotations worth 20% of overall score

Score %

R1 4 20%

R2 4 20%

R3 3 20%

R4 3 20%

there are 10 teammate qualities/dimensions that they are rated on

Score % Weight

D1 4 2%

D2 4 2%

D3 4 2%

D4 3 2%

D5 5 2%

D6 4 2%

D7 4 2%

D8 3 2%

D9 4 2%

D10 4 2%

Would I find the weighted avg by doing the following?:

(R1*.2)+(R2*.2)+(R3*.2)+(R4*.2)+(D1*.2)+(D2*.2)... ..+(D10*.2)

Thanks