51532800 ÷ 386 
We want to figure out the number of times 51532800 can be divided by 386.

Step 1:
386 can be fit into 5 0 times, resulting in a remainder of 5.
Write down 0 as next digit of the result. 
Result so far: 0.0
Subtracting 0 from 5 leaves us with 5.
Fetch the next digit (1) from the dividend, attach it to 5 and continue: 51 / 386

Advancing to step 2:
51 divided by 386 is 0 with a remainder of 51.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
If we subtract 0 from 51, we get 51.
Append the next digit (5) from the dividend to 51 and continue with: 515 / 386

Going ahead to step 3:
386 can be fit into 515 1 times, resulting in a remainder of 129.
Use 1 as the next digit of our solution. 
Result so far: 1.0
Deduct 386 from 515 and we're left with 129.
Append the next digit (3) from the dividend to 129 and continue with: 1293 / 386

Advancing to step 4:
386 can be fit into 1293 3 times, resulting in a remainder of 135.
Use 3 as the next digit of our solution. 
Result so far: 13.0
Subtract 1158 from 1293 to get 135.
Bring next digit (2) of the dividend behind the 135 and repeat the process: 1352 / 386

Moving on to step 5:
If we divide 1352 by 386, we get 3 and a remainder of 194.
Record the quotient 3 as the next digit in the result. 
Result so far: 133.0
Subtracting 1158 from 1352 leaves us with 194.
Take the next digit (8) from the dividend and append it to 194, then repeat: 1948 / 386

On to step 6:
386 can be fit into 1948 5 times, resulting in a remainder of 18.
The number 5 becomes the next digit in our result. 
Result so far: 1335.0
If we subtract 1930 from 1948, we get 18.
Take the next digit (0) from the dividend and append it to 18, then repeat: 180 / 386

Going ahead to step 7:
When dividing 180 by 386, we get 0 with a remainder of 180.
Use 0 as the next digit of our solution. 
Result so far: 13350.0
Deduct 0 from 180 and we're left with 180.
Fetch the next digit (0) from the dividend, attach it to 180 and continue: 1800 / 386

Moving on to step 8:
386 goes into 1800 4 times with a remainder of 256.
Record the quotient 4 as the next digit in the result. 
Result so far: 133504.0
Subtracting 1544 from 1800 leaves us with 256.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2560, and continue the process.

Step 9:
The number 386 fits into 2560 6 times, leaving a remainder of 244.
Use 6 as the next digit of our solution. 
Result so far: 133504.6
If we subtract 2316 from 2560, we get 244.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2440, and continue the process.

Step 10:
If we divide 2440 by 386, we get 6 and a remainder of 124.
Put 6 as the next digit of the answer. 
Result so far: 133504.66
Subtract 2316 from 2440 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.

After the division, we end up with 133504.66 and a remainder of 0.124.