54758174 ÷ 402 
We want to divide 54758174 by 402.

On to step 1:
5 divided by 402 is 0 with a remainder of 5.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
Deduct 0 from 5 and we're left with 5.
Append the next digit (4) from the dividend to 5 and continue with: 54 / 402

Let's proceed to step 2:
The number 402 fits into 54 0 times, leaving a remainder of 54.
Write down 0 as next digit of the result. 
Result so far: 0.0
If we take 0 away from 54, we end up with 54.
Bring next digit (7) of the dividend behind the 54 and repeat the process: 547 / 402

Advancing to step 3:
402 goes into 547 1 times with a remainder of 145.
Put 1 as the next digit of the answer. 
Result so far: 1.0
Deduct 402 from 547 and we're left with 145.
Bring next digit (5) of the dividend behind the 145 and repeat the process: 1455 / 402

Moving on to step 4:
402 can be fit into 1455 3 times, resulting in a remainder of 249.
The next digit of our result is 3. 
Result so far: 13.0
The remainder is 249 after subtracting 1206 from 1455.
Append the next digit (8) from the dividend to 249 and continue with: 2498 / 402

On to step 5:
When dividing 2498 by 402, we get 6 with a remainder of 86.
The next digit of our result is 6. 
Result so far: 136.0
The remainder is 86 after subtracting 2412 from 2498.
Include the next digit (1) from the dividend after 86, then repeat: 861 / 402

Moving on to step 6:
861 divided by 402 is 2 with a remainder of 57.
Put 2 as the next digit of the answer. 
Result so far: 1362.0
Deduct 804 from 861 and we're left with 57.
Take the next digit (7) from the dividend and append it to 57, then repeat: 577 / 402

Step 7:
When dividing 577 by 402, we get 1 with a remainder of 175.
Write down 1 as next digit of the result. 
Result so far: 13621.0
If we take 402 away from 577, we end up with 175.
Bring next digit (4) of the dividend behind the 175 and repeat the process: 1754 / 402

Moving on to step 8:
If we divide 1754 by 402, we get 4 and a remainder of 146.
The next digit of our result is 4. 
Result so far: 136214.0
If we subtract 1608 from 1754, we get 146.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1460, and continue the process.

Advancing to step 9:
If we divide 1460 by 402, we get 3 and a remainder of 254.
The number 3 becomes the next digit in our result. 
Result so far: 136214.3
Deduct 1206 from 1460 and we're left with 254.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2540, and continue the process.

Advancing to step 10:
2540 divided by 402 is 6 with a remainder of 128.
The next digit of our result is 6. 
Result so far: 136214.36
Subtract 2412 from 2540 to get 128.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1280, and continue the process.

On to step 11:
402 goes into 1280 3 times with a remainder of 74.
Record the quotient 3 as the next digit in the result. 
Result so far: 136214.363
If we take 1206 away from 1280, we end up with 74.
Since there are no more digits in the dividend, we add a zero to the remainder making it 740, and continue the process.

On to step 12:
When dividing 740 by 402, we get 1 with a remainder of 338.
The next digit of our result is 1. 
Result so far: 136214.3631
If we take 402 away from 740, we end up with 338.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3380, and continue the process.

On to step 13:
When dividing 3380 by 402, we get 8 with a remainder of 164.
Write down 8 as next digit of the result. 
Result so far: 136214.36318
If we take 3216 away from 3380, we end up with 164.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1640, and continue the process.

Advancing to step 14:
The number 402 fits into 1640 4 times, leaving a remainder of 32.
Use 4 as the next digit of our solution. 
Result so far: 136214.363184
Subtract 1608 from 1640 to get 32.
Since there are no more digits in the dividend, we add a zero to the remainder making it 320, and continue the process.

Step 15:
If we divide 320 by 402, we get 0 and a remainder of 320.
Put 0 as the next digit of the answer. 
Result so far: 136214.363184
Subtracting 0 from 320 leaves us with 320.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3200, and continue the process.

Let's proceed to step 16:
When dividing 3200 by 402, we get 7 with a remainder of 386.
The next digit of our result is 7. 
Result so far: 136214.36318407
The remainder is 386 after subtracting 2814 from 3200.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3860, and continue the process.

The final result is 136214.36318407 with a remainder of 3.86e-07.