Thực hiện phép tính

To find the sum of this arithmetic series, we can use the formula for the sum of the first n terms of an arithmetic series:

S = n/2 * (2a + (n-1)d)

where:
S = sum of the series
n = number of terms
a = first term
d = common difference

In this case, the first term (a) is 1022, the common difference (d) is 1, and there are 100 terms (from x3 to x100).

Plugging in the values:

S = 100/2 * (2(1022) + (100-1)1)
S = 50 * (2044 + 99)
S = 50 * 2143
S = 107150

Therefore, the sum of the series is 107150.