1. The problem involves understanding the progression and summation of numbers associated with specific dates. 2. We observe numbers linked to dates: 14/9/18 has 1,232; 15/9/18 has 5,826 and 6,849; 17/9/18 has 823; and 18/19/20/9/18 have 480, 343, 17,776, and 18,599. 3. The arrows indicate a summation or linking from one date to the next, suggesting we sum the numbers for each date and then sum across dates. 4. Summing numbers for 15/9/18: $$5826 + 6849 = 12675$$ which matches the number crossed out (12,675). 5. Summing numbers for 18/19/20/9/18: $$480 + 343 + 17776 + 18599 = 37198$$ 6. The total sum from 14/9/18 through 20/9/18 is: $$1232 + 12675 + 823 + 37198 = 51828$$ 7. This shows the cumulative total across the dates, following the arrows and summations. Final answer: The total sum of the numbers across the dates 14/9/18 to 20/9/18 is $$51828$$.