We're dividing 53913867 by 403 
We want to figure out the number of times 53913867 can be divided by 403.

Advancing to step 1:
403 can be fit into 5 0 times, resulting in a remainder of 5.
Put 0 as the next digit of the answer. 
Result so far: 0.0
Subtracting 0 from 5 leaves us with 5.
Take the next digit (3) from the dividend and append it to 5, then repeat: 53 / 403

Advancing to step 2:
When dividing 53 by 403, we get 0 with a remainder of 53.
Write down 0 as next digit of the result. 
Result so far: 0.0
If we take 0 away from 53, we end up with 53.
Grab the next digit (9) from the dividend, add it to 53, then carry on: 539 / 403

Moving on to step 3:
When dividing 539 by 403, we get 1 with a remainder of 136.
The number 1 becomes the next digit in our result. 
Result so far: 1.0
If we take 403 away from 539, we end up with 136.
Fetch the next digit (1) from the dividend, attach it to 136 and continue: 1361 / 403

Let's proceed to step 4:
The number 403 fits into 1361 3 times, leaving a remainder of 152.
Put 3 as the next digit of the answer. 
Result so far: 13.0
The remainder is 152 after subtracting 1209 from 1361.
Append the next digit (3) from the dividend to 152 and continue with: 1523 / 403

On to step 5:
403 can be fit into 1523 3 times, resulting in a remainder of 314.
Use 3 as the next digit of our solution. 
Result so far: 133.0
The remainder is 314 after subtracting 1209 from 1523.
Append the next digit (8) from the dividend to 314 and continue with: 3148 / 403

Going ahead to step 6:
403 goes into 3148 7 times with a remainder of 327.
Write down 7 as next digit of the result. 
Result so far: 1337.0
The remainder is 327 after subtracting 2821 from 3148.
Append the next digit (6) from the dividend to 327 and continue with: 3276 / 403

Step 7:
If we divide 3276 by 403, we get 8 and a remainder of 52.
Put 8 as the next digit of the answer. 
Result so far: 13378.0
The remainder is 52 after subtracting 3224 from 3276.
Fetch the next digit (7) from the dividend, attach it to 52 and continue: 527 / 403

Step 8:
403 goes into 527 1 times with a remainder of 124.
Write down 1 as next digit of the result. 
Result so far: 133781.0
Subtracting 403 from 527 leaves us with 124.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1240, and continue the process.

Step 9:
403 goes into 1240 3 times with a remainder of 31.
Record the quotient 3 as the next digit in the result. 
Result so far: 133781.3
Subtract 1209 from 1240 to get 31.
Since there are no more digits in the dividend, we add a zero to the remainder making it 310, and continue the process.

Going ahead to step 10:
When dividing 310 by 403, we get 0 with a remainder of 310.
The number 0 becomes the next digit in our result. 
Result so far: 133781.3
If we take 0 away from 310, we end up with 310.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3100, and continue the process.

Advancing to step 11:
403 can be fit into 3100 7 times, resulting in a remainder of 279.
Write down 7 as next digit of the result. 
Result so far: 133781.307
Subtract 2821 from 3100 to get 279.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2790, and continue the process.

Step 12:
403 can be fit into 2790 6 times, resulting in a remainder of 372.
The next digit of our result is 6. 
Result so far: 133781.3076
Subtract 2418 from 2790 to get 372.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3720, and continue the process.

On to step 13:
The number 403 fits into 3720 9 times, leaving a remainder of 93.
Put 9 as the next digit of the answer. 
Result so far: 133781.30769
The remainder is 93 after subtracting 3627 from 3720.
Since there are no more digits in the dividend, we add a zero to the remainder making it 930, and continue the process.

Advancing to step 14:
The number 403 fits into 930 2 times, leaving a remainder of 124.
Record the quotient 2 as the next digit in the result. 
Result so far: 133781.307692
Subtract 806 from 930 to get 124.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1240, and continue the process.

Step 15:
When dividing 1240 by 403, we get 3 with a remainder of 31.
Record the quotient 3 as the next digit in the result. 
Result so far: 133781.3076923
The remainder is 31 after subtracting 1209 from 1240.
Since there are no more digits in the dividend, we add a zero to the remainder making it 310, and continue the process.

Advancing to step 16:
403 goes into 310 0 times with a remainder of 310.
Write down 0 as next digit of the result. 
Result so far: 133781.3076923
Subtract 0 from 310 to get 310.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3100, and continue the process.

The final result is 133781.3076923 with a remainder of 3.1e-07.