How were the answers derived in screening test 2?

I just need an explanation as to how the answers were derived for the screening test table 2* ONLY 17. The prevalence of a disease is 16% in population X (n = 20,000). Two screening tests have been developed for this disease. Individuals first undergo screening test 1, which has a sensitivity of 85% and specificity of 75%. Only individuals who test positive from screening test 1 undergo the more invasive screening test 2, which has a sensitivity of 95% and a specificity of 80%. Please complete the following contingency tables: (9 points) Screening Test 1 True Disease Status Total Positive Negative Test Result Positive 2720 4200 6920 Negative 480 12600 13080 Total 3200 16800 20000 Screening Test 2 True Disease Status Total Positive Negative Positive 2584 840 3424 Test Result Negative 136 3360 3496 Total 2720 4200 6920 c Inncalu This was already graded so the answers for both tables are correct