The below workout with step by step calculation shows how to find what is the average of numbers from 1000 to 2000 manually.
step 1 Address the formula and input values.
Formula: Average = Total Sum of Numbers / Total Count of Numbers
Input values:
The numbers from 1000 to 2000 are
1000, 1001, 1002, 1003, . . . . , 1998, 1999, 2000
Total Count of Numbers = 1001
step 2 Find the sum of numbers from 1000 to 2000.
sum = 1000 + 1001 + 1002 + . . . . + 1999 + 2000
= 1501500
step 3 Divide the sum by 1001
Average = 1501500/1001
= 1500
1500 is an average of numbers from 1000 to 2000.