I need a tutor on a piece of paper to show the calculations by hand to figure ES EF LS LF and slack. It would visually help to see what's going on.

Instructions: 1. Develop an early start / early finish (ES/EF) schedule for this project, by completing the cells in the table. (LS/LF and slack are optional). Task Id Task Name Pred Duration ES EF LS LF Slack A 1.0 Project management n/a B 2.0 Requirements definition none 3 weeks 0 3 5 8 5 C 3.0 Web site design D 3.1 Registration for rec. programs B 3 w 3 6 7 10 3.2 Registration for classes & progs B Sw 3 3 8 0 3.3 Tracking system B 2 w 3 11 13 8 3.4 Incentive system B 3 w 3 6 12 15 9 4.0 Web site development 4.1 Registration for rec. programs D 6w 6 12 10 16 4.2 Registration for classes & progs E 3 w 8 16 8 16 O O TO Z Z F X - -IT m 4.3 Tracking system F Sw 5 10 13 18 8 4.4 Incentive system G 3 w 6 9 15 18 9 5.0 Testing 5.1 Test registration systems 1,J 4w 16 20 16 20 0 5.2 Test tracking system K 2w 10 12 18 20 8 5.3 Test incentive system L 2w 9 11 18 20 6.0 Training, rollout, & support N.O.P 3 w 20 23 20 23 0