Handwritten Numbers to Excel Rows

I have 1,000 handwritten numbers that I need transcribed accurately into a single Excel spreadsheet. Each number should occupy its own cell, progressing horizontally so the data ends up organized strictly in rows rather than columns.

Because this dataset will feed into later calculations, I also need you to run a simple validation once the entry work is done: flag any duplicate values so I can review them before sign-off. No other checks are required.

Deliverable
• One .xlsx file containing all 1,000 numbers in consecutive rows, with any duplicates clearly indicated (highlighted or marked in an adjacent note).