15724991 ÷ 670 
We're looking to find how many times 670 goes into 15724991.

Step 1:
When dividing 1 by 670, we get 0 with a remainder of 1.
Write down 0 as next digit of the result. 
Result so far: 0.0
If we subtract 0 from 1, we get 1.
Fetch the next digit (5) from the dividend, attach it to 1 and continue: 15 / 670

Moving on to step 2:
If we divide 15 by 670, we get 0 and a remainder of 15.
Write down 0 as next digit of the result. 
Result so far: 0.0
If we take 0 away from 15, we end up with 15.
Include the next digit (7) from the dividend after 15, then repeat: 157 / 670

Advancing to step 3:
670 goes into 157 0 times with a remainder of 157.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
If we subtract 0 from 157, we get 157.
Append the next digit (2) from the dividend to 157 and continue with: 1572 / 670

Let's proceed to step 4:
670 can be fit into 1572 2 times, resulting in a remainder of 232.
Write down 2 as next digit of the result. 
Result so far: 2.0
The remainder is 232 after subtracting 1340 from 1572.
Grab the next digit (4) from the dividend, add it to 232, then carry on: 2324 / 670

On to step 5:
If we divide 2324 by 670, we get 3 and a remainder of 314.
Use 3 as the next digit of our solution. 
Result so far: 23.0
If we subtract 2010 from 2324, we get 314.
Grab the next digit (9) from the dividend, add it to 314, then carry on: 3149 / 670

Let's proceed to step 6:
3149 divided by 670 is 4 with a remainder of 469.
Write down 4 as next digit of the result. 
Result so far: 234.0
If we take 2680 away from 3149, we end up with 469.
Take the next digit (9) from the dividend and append it to 469, then repeat: 4699 / 670

On to step 7:
The number 670 fits into 4699 7 times, leaving a remainder of 9.
Record the quotient 7 as the next digit in the result. 
Result so far: 2347.0
Deduct 4690 from 4699 and we're left with 9.
Bring next digit (1) of the dividend behind the 9 and repeat the process: 91 / 670

Going ahead to step 8:
If we divide 91 by 670, we get 0 and a remainder of 91.
Put 0 as the next digit of the answer. 
Result so far: 23470.0
If we take 0 away from 91, we end up with 91.
Since there are no more digits in the dividend, we add a zero to the remainder making it 910, and continue the process.

Advancing to step 9:
The number 670 fits into 910 1 times, leaving a remainder of 240.
Put 1 as the next digit of the answer. 
Result so far: 23470.1
Subtract 670 from 910 to get 240.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2400, and continue the process.

Let's proceed to step 10:
The number 670 fits into 2400 3 times, leaving a remainder of 390.
Use 3 as the next digit of our solution. 
Result so far: 23470.13
The remainder is 390 after subtracting 2010 from 2400.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3900, and continue the process.

Moving on to step 11:
670 can be fit into 3900 5 times, resulting in a remainder of 550.
Put 5 as the next digit of the answer. 
Result so far: 23470.135
If we subtract 3350 from 3900, we get 550.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5500, and continue the process.

Advancing to step 12:
670 can be fit into 5500 8 times, resulting in a remainder of 140.
The next digit of our result is 8. 
Result so far: 23470.1358
Deduct 5360 from 5500 and we're left with 140.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1400, and continue the process.

Moving on to step 13:
When dividing 1400 by 670, we get 2 with a remainder of 60.
Record the quotient 2 as the next digit in the result. 
Result so far: 23470.13582
Deduct 1340 from 1400 and we're left with 60.
Since there are no more digits in the dividend, we add a zero to the remainder making it 600, and continue the process.

Step 14:
600 divided by 670 is 0 with a remainder of 600.
Write down 0 as next digit of the result. 
Result so far: 23470.13582
Subtracting 0 from 600 leaves us with 600.
Since there are no more digits in the dividend, we add a zero to the remainder making it 6000, and continue the process.

Moving on to step 15:
The number 670 fits into 6000 8 times, leaving a remainder of 640.
Use 8 as the next digit of our solution. 
Result so far: 23470.1358208
The remainder is 640 after subtracting 5360 from 6000.
Since there are no more digits in the dividend, we add a zero to the remainder making it 6400, and continue the process.

Going ahead to step 16:
6400 divided by 670 is 9 with a remainder of 370.
Write down 9 as next digit of the result. 
Result so far: 23470.13582089
Subtracting 6030 from 6400 leaves us with 370.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3700, and continue the process.

In conclusion, the division gives 23470.13582089 with a balance of 3.7e-07.