19966 ÷ 7 = 2852 R2
We're going to perform division on 19966 with 7 as the divisor.

Step 1:
7 goes into 1 0 times with a remainder of 1.
Write down 0 as next digit of of the result. 
Result so far: 0
Subtract 0 from 1 to get 1.
Bring next digit (9) of the dividend behind the 1 and repeat the process: 19 / 7

Step 2:
7 goes into 19 2 times with a remainder of 5.
Write down 2 as next digit of of the result. 
Result so far: 2
Subtract 14 from 19 to get 5.
Bring next digit (9) of the dividend behind the 5 and repeat the process: 59 / 7

Step 3:
7 goes into 59 8 times with a remainder of 3.
Write down 8 as next digit of of the result. 
Result so far: 28
Subtract 56 from 59 to get 3.
Bring next digit (6) of the dividend behind the 3 and repeat the process: 36 / 7

Step 4:
7 goes into 36 5 times with a remainder of 1.
Write down 5 as next digit of of the result. 
Result so far: 285
Subtract 35 from 36 to get 1.
Bring next digit (6) of the dividend behind the 1 and repeat the process: 16 / 7

Step 5:
7 goes into 16 2 times with a remainder of 2.
Write down 2 as next digit of of the result. 
Result so far: 2852
Subtract 14 from 16 to get 2.

The final result is 2852 with a remainder of 2.