51411559 ÷ 340 
We want to figure out the number of times 51411559 can be divided by 340.

On to step 1:
340 goes into 5 0 times with a remainder of 5.
Write down 0 as next digit of the result. 
Result so far: 0.0
If we take 0 away from 5, we end up with 5.
Fetch the next digit (1) from the dividend, attach it to 5 and continue: 51 / 340

Moving on to step 2:
When dividing 51 by 340, we get 0 with a remainder of 51.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
Deduct 0 from 51 and we're left with 51.
Append the next digit (4) from the dividend to 51 and continue with: 514 / 340

Advancing to step 3:
514 divided by 340 is 1 with a remainder of 174.
The number 1 becomes the next digit in our result. 
Result so far: 1.0
If we subtract 340 from 514, we get 174.
Grab the next digit (1) from the dividend, add it to 174, then carry on: 1741 / 340

Advancing to step 4:
When dividing 1741 by 340, we get 5 with a remainder of 41.
The number 5 becomes the next digit in our result. 
Result so far: 15.0
The remainder is 41 after subtracting 1700 from 1741.
Append the next digit (1) from the dividend to 41 and continue with: 411 / 340

Advancing to step 5:
When dividing 411 by 340, we get 1 with a remainder of 71.
The next digit of our result is 1. 
Result so far: 151.0
Deduct 340 from 411 and we're left with 71.
Include the next digit (5) from the dividend after 71, then repeat: 715 / 340

Moving on to step 6:
340 can be fit into 715 2 times, resulting in a remainder of 35.
The next digit of our result is 2. 
Result so far: 1512.0
Deduct 680 from 715 and we're left with 35.
Bring next digit (5) of the dividend behind the 35 and repeat the process: 355 / 340

On to step 7:
340 can be fit into 355 1 times, resulting in a remainder of 15.
The next digit of our result is 1. 
Result so far: 15121.0
If we subtract 340 from 355, we get 15.
Fetch the next digit (9) from the dividend, attach it to 15 and continue: 159 / 340

Step 8:
159 divided by 340 is 0 with a remainder of 159.
The next digit of our result is 0. 
Result so far: 151210.0
If we take 0 away from 159, we end up with 159.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1590, and continue the process.

Advancing to step 9:
1590 divided by 340 is 4 with a remainder of 230.
Record the quotient 4 as the next digit in the result. 
Result so far: 151210.4
Subtract 1360 from 1590 to get 230.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2300, and continue the process.

Moving on to step 10:
The number 340 fits into 2300 6 times, leaving a remainder of 260.
Record the quotient 6 as the next digit in the result. 
Result so far: 151210.46
Subtracting 2040 from 2300 leaves us with 260.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2600, and continue the process.

Moving on to step 11:
340 can be fit into 2600 7 times, resulting in a remainder of 220.
The next digit of our result is 7. 
Result so far: 151210.467
Subtracting 2380 from 2600 leaves us with 220.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2200, and continue the process.

Advancing to step 12:
The number 340 fits into 2200 6 times, leaving a remainder of 160.
The number 6 becomes the next digit in our result. 
Result so far: 151210.4676
If we subtract 2040 from 2200, we get 160.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1600, and continue the process.

Step 13:
1600 divided by 340 is 4 with a remainder of 240.
The next digit of our result is 4. 
Result so far: 151210.46764
If we take 1360 away from 1600, we end up with 240.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2400, and continue the process.

Moving on to step 14:
The number 340 fits into 2400 7 times, leaving a remainder of 20.
The number 7 becomes the next digit in our result. 
Result so far: 151210.467647
Subtract 2380 from 2400 to get 20.
Since there are no more digits in the dividend, we add a zero to the remainder making it 200, and continue the process.

On to step 15:
340 can be fit into 200 0 times, resulting in a remainder of 200.
Write down 0 as next digit of the result. 
Result so far: 151210.467647
Subtracting 0 from 200 leaves us with 200.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2000, and continue the process.

Step 16:
If we divide 2000 by 340, we get 5 and a remainder of 300.
The number 5 becomes the next digit in our result. 
Result so far: 151210.46764705
If we subtract 1700 from 2000, we get 300.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3000, and continue the process.

The final result is 151210.46764705 with a remainder of 3e-07.