53398 ÷ 7 = 7628 R2
We're going to perform division on 53398 with 7 as the divisor.

Step 1:
7 goes into 5 0 times with a remainder of 5.
Write down 0 as next digit of of the result. 
Result so far: 0
Subtract 0 from 5 to get 5.
Bring next digit (3) of the dividend behind the 5 and repeat the process: 53 / 7

Step 2:
7 goes into 53 7 times with a remainder of 4.
Write down 7 as next digit of of the result. 
Result so far: 7
Subtract 49 from 53 to get 4.
Bring next digit (3) of the dividend behind the 4 and repeat the process: 43 / 7

Step 3:
7 goes into 43 6 times with a remainder of 1.
Write down 6 as next digit of of the result. 
Result so far: 76
Subtract 42 from 43 to get 1.
Bring next digit (9) of the dividend behind the 1 and repeat the process: 19 / 7

Step 4:
7 goes into 19 2 times with a remainder of 5.
Write down 2 as next digit of of the result. 
Result so far: 762
Subtract 14 from 19 to get 5.
Bring next digit (8) of the dividend behind the 5 and repeat the process: 58 / 7

Step 5:
7 goes into 58 8 times with a remainder of 2.
Write down 8 as next digit of of the result. 
Result so far: 7628
Subtract 56 from 58 to get 2.

The final result is 7628 with a remainder of 2.