51970150 divided by 407 
The aim is to understand the frequency of 407 in 51970150.

Let's proceed to step 1:
5 divided by 407 is 0 with a remainder of 5.
Write down 0 as next digit of the result. 
Result so far: 0.0
If we subtract 0 from 5, we get 5.
Bring next digit (1) of the dividend behind the 5 and repeat the process: 51 / 407

Step 2:
407 can be fit into 51 0 times, resulting in a remainder of 51.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
The remainder is 51 after subtracting 0 from 51.
Include the next digit (9) from the dividend after 51, then repeat: 519 / 407

Going ahead to step 3:
407 can be fit into 519 1 times, resulting in a remainder of 112.
The next digit of our result is 1. 
Result so far: 1.0
If we subtract 407 from 519, we get 112.
Grab the next digit (7) from the dividend, add it to 112, then carry on: 1127 / 407

On to step 4:
407 goes into 1127 2 times with a remainder of 313.
Put 2 as the next digit of the answer. 
Result so far: 12.0
Subtract 814 from 1127 to get 313.
Append the next digit (0) from the dividend to 313 and continue with: 3130 / 407

Advancing to step 5:
If we divide 3130 by 407, we get 7 and a remainder of 281.
Put 7 as the next digit of the answer. 
Result so far: 127.0
If we take 2849 away from 3130, we end up with 281.
Grab the next digit (1) from the dividend, add it to 281, then carry on: 2811 / 407

Going ahead to step 6:
When dividing 2811 by 407, we get 6 with a remainder of 369.
Write down 6 as next digit of the result. 
Result so far: 1276.0
Subtract 2442 from 2811 to get 369.
Grab the next digit (5) from the dividend, add it to 369, then carry on: 3695 / 407

Step 7:
3695 divided by 407 is 9 with a remainder of 32.
The next digit of our result is 9. 
Result so far: 12769.0
Subtract 3663 from 3695 to get 32.
Grab the next digit (0) from the dividend, add it to 32, then carry on: 320 / 407

Advancing to step 8:
407 can be fit into 320 0 times, resulting in a remainder of 320.
Use 0 as the next digit of our solution. 
Result so far: 127690.0
Subtracting 0 from 320 leaves us 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.

Advancing to step 9:
When dividing 3200 by 407, we get 7 with a remainder of 351.
Use 7 as the next digit of our solution. 
Result so far: 127690.7
Subtracting 2849 from 3200 leaves us with 351.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3510, and continue the process.

Let's proceed to step 10:
If we divide 3510 by 407, we get 8 and a remainder of 254.
The next digit of our result is 8. 
Result so far: 127690.78
Deduct 3256 from 3510 and we're left with 254.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2540, and continue the process.

Moving on to step 11:
If we divide 2540 by 407, we get 6 and a remainder of 98.
The next digit of our result is 6. 
Result so far: 127690.786
Subtracting 2442 from 2540 leaves us with 98.
Since there are no more digits in the dividend, we add a zero to the remainder making it 980, and continue the process.

Step 12:
407 goes into 980 2 times with a remainder of 166.
The number 2 becomes the next digit in our result. 
Result so far: 127690.7862
Deduct 814 from 980 and we're left with 166.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1660, and continue the process.

Let's proceed to step 13:
The number 407 fits into 1660 4 times, leaving a remainder of 32.
Put 4 as the next digit of the answer. 
Result so far: 127690.78624
If we subtract 1628 from 1660, we get 32.
Since there are no more digits in the dividend, we add a zero to the remainder making it 320, and continue the process.

On to step 14:
320 divided by 407 is 0 with a remainder of 320.
Put 0 as the next digit of the answer. 
Result so far: 127690.78624
If we subtract 0 from 320, we get 320.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3200, and continue the process.

Going ahead to step 15:
407 can be fit into 3200 7 times, resulting in a remainder of 351.
Put 7 as the next digit of the answer. 
Result so far: 127690.7862407
Subtract 2849 from 3200 to get 351.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3510, and continue the process.

Advancing to step 16:
407 can be fit into 3510 8 times, resulting in a remainder of 254.
The number 8 becomes the next digit in our result. 
Result so far: 127690.78624078
Deduct 3256 from 3510 and we're left with 254.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2540, and continue the process.

The quotient of the division is 127690.78624078, and the remainder is 2.54e-07.