51587808 divided by 355 
The aim is to understand the frequency of 355 in 51587808.

Advancing to step 1:
355 goes into 5 0 times with a remainder of 5.
The next digit of our result is 0. 
Result so far: 0.0
Deduct 0 from 5 and we're left with 5.
Fetch the next digit (1) from the dividend, attach it to 5 and continue: 51 / 355

Moving on to step 2:
If we divide 51 by 355, we get 0 and a remainder of 51.
Use 0 as the next digit of our solution. 
Result so far: 0.0
Subtracting 0 from 51 leaves us with 51.
Append the next digit (5) from the dividend to 51 and continue with: 515 / 355

Advancing to step 3:
If we divide 515 by 355, we get 1 and a remainder of 160.
Write down 1 as next digit of the result. 
Result so far: 1.0
Deduct 355 from 515 and we're left with 160.
Fetch the next digit (8) from the dividend, attach it to 160 and continue: 1608 / 355

On to step 4:
355 goes into 1608 4 times with a remainder of 188.
Put 4 as the next digit of the answer. 
Result so far: 14.0
The remainder is 188 after subtracting 1420 from 1608.
Append the next digit (7) from the dividend to 188 and continue with: 1887 / 355

Let's proceed to step 5:
If we divide 1887 by 355, we get 5 and a remainder of 112.
Write down 5 as next digit of the result. 
Result so far: 145.0
Subtracting 1775 from 1887 leaves us with 112.
Take the next digit (8) from the dividend and append it to 112, then repeat: 1128 / 355

Let's proceed to step 6:
The number 355 fits into 1128 3 times, leaving a remainder of 63.
Record the quotient 3 as the next digit in the result. 
Result so far: 1453.0
If we subtract 1065 from 1128, we get 63.
Fetch the next digit (0) from the dividend, attach it to 63 and continue: 630 / 355

On to step 7:
355 can be fit into 630 1 times, resulting in a remainder of 275.
Put 1 as the next digit of the answer. 
Result so far: 14531.0
Deduct 355 from 630 and we're left with 275.
Grab the next digit (8) from the dividend, add it to 275, then carry on: 2758 / 355

Going ahead to step 8:
355 goes into 2758 7 times with a remainder of 273.
The number 7 becomes the next digit in our result. 
Result so far: 145317.0
If we subtract 2485 from 2758, we get 273.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2730, and continue the process.

Let's proceed to step 9:
If we divide 2730 by 355, we get 7 and a remainder of 245.
Record the quotient 7 as the next digit in the result. 
Result so far: 145317.7
If we subtract 2485 from 2730, we get 245.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2450, and continue the process.

Moving on to step 10:
The number 355 fits into 2450 6 times, leaving a remainder of 320.
Use 6 as the next digit of our solution. 
Result so far: 145317.76
If we take 2130 away from 2450, we end up 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.

Step 11:
3200 divided by 355 is 9 with a remainder of 5.
Use 9 as the next digit of our solution. 
Result so far: 145317.769
If we subtract 3195 from 3200, we get 5.
Since there are no more digits in the dividend, we add a zero to the remainder making it 50, and continue the process.

Advancing to step 12:
355 goes into 50 0 times with a remainder of 50.
Write down 0 as next digit of the result. 
Result so far: 145317.769
Subtracting 0 from 50 leaves us with 50.
Since there are no more digits in the dividend, we add a zero to the remainder making it 500, and continue the process.

Moving on to step 13:
355 can be fit into 500 1 times, resulting in a remainder of 145.
Write down 1 as next digit of the result. 
Result so far: 145317.76901
If we subtract 355 from 500, we get 145.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1450, and continue the process.

On to step 14:
If we divide 1450 by 355, we get 4 and a remainder of 30.
Use 4 as the next digit of our solution. 
Result so far: 145317.769014
If we subtract 1420 from 1450, we get 30.
Since there are no more digits in the dividend, we add a zero to the remainder making it 300, and continue the process.

On to step 15:
When dividing 300 by 355, we get 0 with a remainder of 300.
Put 0 as the next digit of the answer. 
Result so far: 145317.769014
Subtracting 0 from 300 leaves us with 300.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3000, and continue the process.

Moving on to step 16:
3000 divided by 355 is 8 with a remainder of 160.
Put 8 as the next digit of the answer. 
Result so far: 145317.76901408
If we take 2840 away from 3000, we end up with 160.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1600, and continue the process.

The quotient of the division is 145317.76901408, and the remainder is 1.6e-07.