54102157 divided by 105 
We want to figure out the number of times 54102157 can be divided by 105.

Step 1:
When dividing 5 by 105, we get 0 with a remainder of 5.
Use 0 as the next digit of our solution. 
Result so far: 0.0
The remainder is 5 after subtracting 0 from 5.
Fetch the next digit (4) from the dividend, attach it to 5 and continue: 54 / 105

On to step 2:
54 divided by 105 is 0 with a remainder of 54.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
If we subtract 0 from 54, we get 54.
Append the next digit (1) from the dividend to 54 and continue with: 541 / 105

Advancing to step 3:
The number 105 fits into 541 5 times, leaving a remainder of 16.
Put 5 as the next digit of the answer. 
Result so far: 5.0
The remainder is 16 after subtracting 525 from 541.
Take the next digit (0) from the dividend and append it to 16, then repeat: 160 / 105

Step 4:
160 divided by 105 is 1 with a remainder of 55.
Record the quotient 1 as the next digit in the result. 
Result so far: 51.0
If we take 105 away from 160, we end up with 55.
Take the next digit (2) from the dividend and append it to 55, then repeat: 552 / 105

Advancing to step 5:
552 divided by 105 is 5 with a remainder of 27.
Use 5 as the next digit of our solution. 
Result so far: 515.0
The remainder is 27 after subtracting 525 from 552.
Append the next digit (1) from the dividend to 27 and continue with: 271 / 105

Going ahead to step 6:
105 can be fit into 271 2 times, resulting in a remainder of 61.
Use 2 as the next digit of our solution. 
Result so far: 5152.0
If we subtract 210 from 271, we get 61.
Fetch the next digit (5) from the dividend, attach it to 61 and continue: 615 / 105

Step 7:
615 divided by 105 is 5 with a remainder of 90.
Record the quotient 5 as the next digit in the result. 
Result so far: 51525.0
The remainder is 90 after subtracting 525 from 615.
Append the next digit (7) from the dividend to 90 and continue with: 907 / 105

Let's proceed to step 8:
105 can be fit into 907 8 times, resulting in a remainder of 67.
Use 8 as the next digit of our solution. 
Result so far: 515258.0
If we subtract 840 from 907, we get 67.
Since there are no more digits in the dividend, we add a zero to the remainder making it 670, and continue the process.

Advancing to step 9:
105 can be fit into 670 6 times, resulting in a remainder of 40.
Record the quotient 6 as the next digit in the result. 
Result so far: 515258.6
Deduct 630 from 670 and we're left with 40.
Since there are no more digits in the dividend, we add a zero to the remainder making it 400, and continue the process.

Let's proceed to step 10:
105 goes into 400 3 times with a remainder of 85.
Record the quotient 3 as the next digit in the result. 
Result so far: 515258.63
Subtract 315 from 400 to get 85.
Since there are no more digits in the dividend, we add a zero to the remainder making it 850, and continue the process.

Going ahead to step 11:
If we divide 850 by 105, we get 8 and a remainder of 10.
The number 8 becomes the next digit in our result. 
Result so far: 515258.638
The remainder is 10 after subtracting 840 from 850.
Since there are no more digits in the dividend, we add a zero to the remainder making it 100, and continue the process.

Moving on to step 12:
If we divide 100 by 105, we get 0 and a remainder of 100.
Use 0 as the next digit of our solution. 
Result so far: 515258.638
The remainder is 100 after subtracting 0 from 100.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1000, and continue the process.

Let's proceed to step 13:
The number 105 fits into 1000 9 times, leaving a remainder of 55.
Put 9 as the next digit of the answer. 
Result so far: 515258.63809
Deduct 945 from 1000 and we're left with 55.
Since there are no more digits in the dividend, we add a zero to the remainder making it 550, and continue the process.

On to step 14:
105 goes into 550 5 times with a remainder of 25.
Use 5 as the next digit of our solution. 
Result so far: 515258.638095
The remainder is 25 after subtracting 525 from 550.
Since there are no more digits in the dividend, we add a zero to the remainder making it 250, and continue the process.

Let's proceed to step 15:
250 divided by 105 is 2 with a remainder of 40.
Put 2 as the next digit of the answer. 
Result so far: 515258.6380952
If we take 210 away from 250, we end up with 40.
Since there are no more digits in the dividend, we add a zero to the remainder making it 400, and continue the process.

Moving on to step 16:
If we divide 400 by 105, we get 3 and a remainder of 85.
The next digit of our result is 3. 
Result so far: 515258.63809523
Subtract 315 from 400 to get 85.
Since there are no more digits in the dividend, we add a zero to the remainder making it 850, and continue the process.

In conclusion, the division gives 515258.63809523 with a balance of 8.5e-08.