54959571 ÷ 398 
We want to divide 54959571 by 398.

Moving on to step 1:
398 goes into 5 0 times with a remainder of 5.
Use 0 as the next digit of our solution. 
Result so far: 0.0
Deduct 0 from 5 and we're left with 5.
Fetch the next digit (4) from the dividend, attach it to 5 and continue: 54 / 398

Let's proceed to step 2:
398 goes into 54 0 times with a remainder of 54.
Write down 0 as next digit of the result. 
Result so far: 0.0
If we subtract 0 from 54, we get 54.
Append the next digit (9) from the dividend to 54 and continue with: 549 / 398

Moving on to step 3:
398 can be fit into 549 1 times, resulting in a remainder of 151.
Put 1 as the next digit of the answer. 
Result so far: 1.0
If we subtract 398 from 549, we get 151.
Take the next digit (5) from the dividend and append it to 151, then repeat: 1515 / 398

On to step 4:
398 can be fit into 1515 3 times, resulting in a remainder of 321.
The next digit of our result is 3. 
Result so far: 13.0
If we take 1194 away from 1515, we end up with 321.
Append the next digit (9) from the dividend to 321 and continue with: 3219 / 398

On to step 5:
If we divide 3219 by 398, we get 8 and a remainder of 35.
Use 8 as the next digit of our solution. 
Result so far: 138.0
Subtracting 3184 from 3219 leaves us with 35.
Fetch the next digit (5) from the dividend, attach it to 35 and continue: 355 / 398

Going ahead to step 6:
When dividing 355 by 398, we get 0 with a remainder of 355.
The next digit of our result is 0. 
Result so far: 1380.0
Subtracting 0 from 355 leaves us with 355.
Take the next digit (7) from the dividend and append it to 355, then repeat: 3557 / 398

Let's proceed to step 7:
3557 divided by 398 is 8 with a remainder of 373.
The number 8 becomes the next digit in our result. 
Result so far: 13808.0
Deduct 3184 from 3557 and we're left with 373.
Bring next digit (1) of the dividend behind the 373 and repeat the process: 3731 / 398

Let's proceed to step 8:
When dividing 3731 by 398, we get 9 with a remainder of 149.
The next digit of our result is 9. 
Result so far: 138089.0
If we subtract 3582 from 3731, we get 149.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1490, and continue the process.

Advancing to step 9:
When dividing 1490 by 398, we get 3 with a remainder of 296.
Put 3 as the next digit of the answer. 
Result so far: 138089.3
Deduct 1194 from 1490 and we're left with 296.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2960, and continue the process.

On to step 10:
When dividing 2960 by 398, we get 7 with a remainder of 174.
Write down 7 as next digit of the result. 
Result so far: 138089.37
Subtract 2786 from 2960 to get 174.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1740, and continue the process.

Advancing to step 11:
398 goes into 1740 4 times with a remainder of 148.
The next digit of our result is 4. 
Result so far: 138089.374
If we take 1592 away from 1740, we end up with 148.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1480, and continue the process.

Step 12:
1480 divided by 398 is 3 with a remainder of 286.
Write down 3 as next digit of the result. 
Result so far: 138089.3743
If we take 1194 away from 1480, we end up with 286.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2860, and continue the process.

Going ahead to step 13:
398 can be fit into 2860 7 times, resulting in a remainder of 74.
Put 7 as the next digit of the answer. 
Result so far: 138089.37437
If we subtract 2786 from 2860, we get 74.
Since there are no more digits in the dividend, we add a zero to the remainder making it 740, and continue the process.

Going ahead to step 14:
398 goes into 740 1 times with a remainder of 342.
The number 1 becomes the next digit in our result. 
Result so far: 138089.374371
Subtracting 398 from 740 leaves us with 342.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3420, and continue the process.

Let's proceed to step 15:
The number 398 fits into 3420 8 times, leaving a remainder of 236.
Put 8 as the next digit of the answer. 
Result so far: 138089.3743718
Subtracting 3184 from 3420 leaves us with 236.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2360, and continue the process.

Going ahead to step 16:
398 can be fit into 2360 5 times, resulting in a remainder of 370.
The number 5 becomes the next digit in our result. 
Result so far: 138089.37437185
The remainder is 370 after subtracting 1990 from 2360.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3700, and continue the process.

In conclusion, the division gives 138089.37437185 with a balance of 3.7e-07.