How many natural numbers from 1 to 1001 can't be divisible by 7.11.13?

How many natural numbers from 1 to 1001 can't be divisible by 7.11.13?

Among the natural numbers from 1 to 1001, the number that can be divided by 7 is: among the natural numbers from 1001 / 7 = 1431 to 1001, the number that can be divided by 11 is: among the natural numbers from 1001 / 11 = 911 to 1001, the number that can be divided by 13 is: among the natural numbers from 1001 / 13 = 771 to 1001, the number that can be divided by 7 and 11 is: 1