51631546 divided by 402 
We're looking to find how many times 402 goes into 51631546.

Step 1:
If we divide 5 by 402, we get 0 and a remainder of 5.
Put 0 as the next digit of the answer. 
Result so far: 0.0
Subtract 0 from 5 to get 5.
Include the next digit (1) from the dividend after 5, then repeat: 51 / 402

Advancing to step 2:
The number 402 fits into 51 0 times, leaving a remainder of 51.
Use 0 as the next digit of our solution. 
Result so far: 0.0
Deduct 0 from 51 and we're left with 51.
Fetch the next digit (6) from the dividend, attach it to 51 and continue: 516 / 402

Step 3:
When dividing 516 by 402, we get 1 with a remainder of 114.
Write down 1 as next digit of the result. 
Result so far: 1.0
If we take 402 away from 516, we end up with 114.
Bring next digit (3) of the dividend behind the 114 and repeat the process: 1143 / 402

Going ahead to step 4:
If we divide 1143 by 402, we get 2 and a remainder of 339.
The number 2 becomes the next digit in our result. 
Result so far: 12.0
Subtracting 804 from 1143 leaves us with 339.
Take the next digit (1) from the dividend and append it to 339, then repeat: 3391 / 402

Let's proceed to step 5:
When dividing 3391 by 402, we get 8 with a remainder of 175.
Write down 8 as next digit of the result. 
Result so far: 128.0
Deduct 3216 from 3391 and we're left with 175.
Include the next digit (5) from the dividend after 175, then repeat: 1755 / 402

Step 6:
If we divide 1755 by 402, we get 4 and a remainder of 147.
The next digit of our result is 4. 
Result so far: 1284.0
Subtract 1608 from 1755 to get 147.
Take the next digit (4) from the dividend and append it to 147, then repeat: 1474 / 402

Advancing to step 7:
If we divide 1474 by 402, we get 3 and a remainder of 268.
Use 3 as the next digit of our solution. 
Result so far: 12843.0
Subtracting 1206 from 1474 leaves us with 268.
Include the next digit (6) from the dividend after 268, then repeat: 2686 / 402

Let's proceed to step 8:
If we divide 2686 by 402, we get 6 and a remainder of 274.
Use 6 as the next digit of our solution. 
Result so far: 128436.0
Subtracting 2412 from 2686 leaves us with 274.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2740, and continue the process.

Moving on to step 9:
The number 402 fits into 2740 6 times, leaving a remainder of 328.
Use 6 as the next digit of our solution. 
Result so far: 128436.6
If we subtract 2412 from 2740, we get 328.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3280, and continue the process.

On to step 10:
3280 divided by 402 is 8 with a remainder of 64.
The next digit of our result is 8. 
Result so far: 128436.68
Subtract 3216 from 3280 to get 64.
Since there are no more digits in the dividend, we add a zero to the remainder making it 640, and continue the process.

Moving on to step 11:
If we divide 640 by 402, we get 1 and a remainder of 238.
Record the quotient 1 as the next digit in the result. 
Result so far: 128436.681
Subtract 402 from 640 to get 238.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2380, and continue the process.

Step 12:
When dividing 2380 by 402, we get 5 with a remainder of 370.
Use 5 as the next digit of our solution. 
Result so far: 128436.6815
If we subtract 2010 from 2380, we get 370.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3700, and continue the process.

Step 13:
402 can be fit into 3700 9 times, resulting in a remainder of 82.
The next digit of our result is 9. 
Result so far: 128436.68159
If we take 3618 away from 3700, we end up with 82.
Since there are no more digits in the dividend, we add a zero to the remainder making it 820, and continue the process.

Going ahead to step 14:
402 can be fit into 820 2 times, resulting in a remainder of 16.
Put 2 as the next digit of the answer. 
Result so far: 128436.681592
Subtracting 804 from 820 leaves us with 16.
Since there are no more digits in the dividend, we add a zero to the remainder making it 160, and continue the process.

Step 15:
402 can be fit into 160 0 times, resulting in a remainder of 160.
The number 0 becomes the next digit in our result. 
Result so far: 128436.681592
The remainder is 160 after subtracting 0 from 160.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1600, and continue the process.

Moving on to step 16:
1600 divided by 402 is 3 with a remainder of 394.
Use 3 as the next digit of our solution. 
Result so far: 128436.68159203
Subtract 1206 from 1600 to get 394.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3940, and continue the process.

The final result is 128436.68159203 with a remainder of 3.94e-07.