402893 ÷ 51 
We're looking to find how many times 51 goes into 402893.

Moving on to step 1:
51 goes into 4 0 times with a remainder of 4.
Write down 0 as next digit of the result. 
Result so far: 0.0
If we take 0 away from 4, we end up with 4.
Append the next digit (0) from the dividend to 4 and continue with: 40 / 51

On to step 2:
51 can be fit into 40 0 times, resulting in a remainder of 40.
Put 0 as the next digit of the answer. 
Result so far: 0.0
The remainder is 40 after subtracting 0 from 40.
Grab the next digit (2) from the dividend, add it to 40, then carry on: 402 / 51

Moving on to step 3:
402 divided by 51 is 7 with a remainder of 45.
Write down 7 as next digit of the result. 
Result so far: 7.0
Deduct 357 from 402 and we're left with 45.
Grab the next digit (8) from the dividend, add it to 45, then carry on: 458 / 51

Let's proceed to step 4:
The number 51 fits into 458 8 times, leaving a remainder of 50.
The number 8 becomes the next digit in our result. 
Result so far: 78.0
Subtract 408 from 458 to get 50.
Append the next digit (9) from the dividend to 50 and continue with: 509 / 51

Advancing to step 5:
51 can be fit into 509 9 times, resulting in a remainder of 50.
Record the quotient 9 as the next digit in the result. 
Result so far: 789.0
Subtracting 459 from 509 leaves us with 50.
Append the next digit (3) from the dividend to 50 and continue with: 503 / 51

On to step 6:
51 can be fit into 503 9 times, resulting in a remainder of 44.
Record the quotient 9 as the next digit in the result. 
Result so far: 7899.0
The remainder is 44 after subtracting 459 from 503.
Since there are no more digits in the dividend, we add a zero to the remainder making it 440, and continue the process.

Advancing to step 7:
When dividing 440 by 51, we get 8 with a remainder of 32.
Use 8 as the next digit of our solution. 
Result so far: 7899.8
Subtracting 408 from 440 leaves us with 32.
Since there are no more digits in the dividend, we add a zero to the remainder making it 320, and continue the process.

Let's proceed to step 8:
The number 51 fits into 320 6 times, leaving a remainder of 14.
Write down 6 as next digit of the result. 
Result so far: 7899.86
Deduct 306 from 320 and we're left with 14.
Since there are no more digits in the dividend, we add a zero to the remainder making it 140, and continue the process.

Advancing to step 9:
If we divide 140 by 51, we get 2 and a remainder of 38.
Use 2 as the next digit of our solution. 
Result so far: 7899.862
If we subtract 102 from 140, we get 38.
Since there are no more digits in the dividend, we add a zero to the remainder making it 380, and continue the process.

Let's proceed to step 10:
The number 51 fits into 380 7 times, leaving a remainder of 23.
Use 7 as the next digit of our solution. 
Result so far: 7899.8627
If we subtract 357 from 380, we get 23.
Since there are no more digits in the dividend, we add a zero to the remainder making it 230, and continue the process.

Moving on to step 11:
51 goes into 230 4 times with a remainder of 26.
Write down 4 as next digit of the result. 
Result so far: 7899.86274
The remainder is 26 after subtracting 204 from 230.
Since there are no more digits in the dividend, we add a zero to the remainder making it 260, and continue the process.

Advancing to step 12:
260 divided by 51 is 5 with a remainder of 5.
Record the quotient 5 as the next digit in the result. 
Result so far: 7899.862745
The remainder is 5 after subtracting 255 from 260.
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 13:
When dividing 50 by 51, we get 0 with a remainder of 50.
Record the quotient 0 as the next digit in the result. 
Result so far: 7899.862745
If we take 0 away from 50, we end up 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.

Let's proceed to step 14:
51 can be fit into 500 9 times, resulting in a remainder of 41.
Write down 9 as next digit of the result. 
Result so far: 7899.86274509
If we take 459 away from 500, we end up with 41.
Since there are no more digits in the dividend, we add a zero to the remainder making it 410, and continue the process.

The final outcome is 7899.86274509, with a leftover of 4.1e-08.