프로그레스바 로직 질문있어요....

qIdx = 0:(100 / endPoint) * (qIdx + 1)(100 / 12) * (0 + 1)(100 / 12) * 1약 8.33%qIdx = 1:(100 / endPoint) * (qIdx + 1)(100 / 12) * (1 + 1)(100 / 12) * 2약 16.67%qIdx = 2:(100 / endPoint) * (qIdx + 1)(100 / 12) * (2 + 1)(100 / 12) * 3약 25%qIdx = 3:(100 / endPoint) * (qIdx + 1)(100 / 12) * (3 + 1)(100 / 12) * 4약 33.33%qIdx = 4:(100 / endPoint) * (qIdx + 1)(100 / 12) * (4 + 1)(100 / 12) * 5약 41.67%qIdx = 5:(100 / endPoint) * (qIdx + 1)(100 / 12) * (5 + 1)(100 / 12) * 6약 50%qIdx = 6:(100 / endPoint) * (qIdx + 1)(100 / 12) * (6 + 1)(100 / 12) * 7약 58.33%qIdx = 7:(100 / endPoint) * (qIdx + 1)(100 / 12) * (7 + 1)(100 / 12) * 8약 66.67%qIdx = 8:(100 / endPoint) * (qIdx + 1)(100 / 12) * (8 + 1)(100 / 12) * 9약 75%qIdx = 9:(100 / endPoint) * (qIdx + 1)(100 / 12) * (9 + 1)(100 / 12) * 10약 83.33%qIdx = 10:(100 / endPoint) * (qIdx + 1)(100 / 12) * (10 + 1)(100 / 12) * 11약 91.67%qIdx = 11:(100 / endPoint) * (qIdx + 1)(100 / 12) * (11 + 1)(100 / 12) * 12정확히 100%