42185170 ÷ 139 
Let's see how many times 139 fits into 42185170.

Let's proceed to step 1:
When dividing 4 by 139, we get 0 with a remainder of 4.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
If we take 0 away from 4, we end up with 4.
Append the next digit (2) from the dividend to 4 and continue with: 42 / 139

Moving on to step 2:
139 goes into 42 0 times with a remainder of 42.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
Subtracting 0 from 42 leaves us with 42.
Bring next digit (1) of the dividend behind the 42 and repeat the process: 421 / 139

Advancing to step 3:
If we divide 421 by 139, we get 3 and a remainder of 4.
Put 3 as the next digit of the answer. 
Result so far: 3.0
The remainder is 4 after subtracting 417 from 421.
Fetch the next digit (8) from the dividend, attach it to 4 and continue: 48 / 139

Going ahead to step 4:
The number 139 fits into 48 0 times, leaving a remainder of 48.
Record the quotient 0 as the next digit in the result. 
Result so far: 30.0
If we subtract 0 from 48, we get 48.
Fetch the next digit (5) from the dividend, attach it to 48 and continue: 485 / 139

Step 5:
The number 139 fits into 485 3 times, leaving a remainder of 68.
The number 3 becomes the next digit in our result. 
Result so far: 303.0
If we take 417 away from 485, we end up with 68.
Fetch the next digit (1) from the dividend, attach it to 68 and continue: 681 / 139

On to step 6:
The number 139 fits into 681 4 times, leaving a remainder of 125.
Put 4 as the next digit of the answer. 
Result so far: 3034.0
If we subtract 556 from 681, we get 125.
Fetch the next digit (7) from the dividend, attach it to 125 and continue: 1257 / 139

Advancing to step 7:
When dividing 1257 by 139, we get 9 with a remainder of 6.
Use 9 as the next digit of our solution. 
Result so far: 30349.0
Deduct 1251 from 1257 and we're left with 6.
Grab the next digit (0) from the dividend, add it to 6, then carry on: 60 / 139

Advancing to step 8:
If we divide 60 by 139, we get 0 and a remainder of 60.
Use 0 as the next digit of our solution. 
Result so far: 303490.0
If we subtract 0 from 60, we get 60.
Since there are no more digits in the dividend, we add a zero to the remainder making it 600, and continue the process.

Advancing to step 9:
139 goes into 600 4 times with a remainder of 44.
The next digit of our result is 4. 
Result so far: 303490.4
If we take 556 away from 600, we end up with 44.
Since there are no more digits in the dividend, we add a zero to the remainder making it 440, and continue the process.

Going ahead to step 10:
When dividing 440 by 139, we get 3 with a remainder of 23.
Put 3 as the next digit of the answer. 
Result so far: 303490.43
Subtract 417 from 440 to 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.

Advancing to step 11:
When dividing 230 by 139, we get 1 with a remainder of 91.
Write down 1 as next digit of the result. 
Result so far: 303490.431
Subtracting 139 from 230 leaves us 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.

Step 12:
When dividing 910 by 139, we get 6 with a remainder of 76.
Write down 6 as next digit of the result. 
Result so far: 303490.4316
Deduct 834 from 910 and we're left with 76.
Since there are no more digits in the dividend, we add a zero to the remainder making it 760, and continue the process.

Moving on to step 13:
139 can be fit into 760 5 times, resulting in a remainder of 65.
Write down 5 as next digit of the result. 
Result so far: 303490.43165
The remainder is 65 after subtracting 695 from 760.
Since there are no more digits in the dividend, we add a zero to the remainder making it 650, and continue the process.

Moving on to step 14:
650 divided by 139 is 4 with a remainder of 94.
The next digit of our result is 4. 
Result so far: 303490.431654
The remainder is 94 after subtracting 556 from 650.
Since there are no more digits in the dividend, we add a zero to the remainder making it 940, and continue the process.

Advancing to step 15:
When dividing 940 by 139, we get 6 with a remainder of 106.
Use 6 as the next digit of our solution. 
Result so far: 303490.4316546
If we subtract 834 from 940, we get 106.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1060, and continue the process.

Going ahead to step 16:
When dividing 1060 by 139, we get 7 with a remainder of 87.
Put 7 as the next digit of the answer. 
Result so far: 303490.43165467
The remainder is 87 after subtracting 973 from 1060.
Since there are no more digits in the dividend, we add a zero to the remainder making it 870, and continue the process.

The quotient of the division is 303490.43165467, and the remainder is 8.7e-08.