What's the actual ROI of automating HR operations for an SMB? Has anyone tracked the time/cost savings after switching from manual processes?

Automating HR operations helps SMBs reduce repetitive admin work, improve accuracy, and save valuable time. Many businesses report faster payroll, smoother attendance tracking, and lower operational costs after replacing manual HR processes. What's the actual ROI of automating HR operations for an SMB? Has anyone tracked the time/cost savings after switching from manual processes?