When we divide a number by another number, we are essentially asking "how many times does the divisor fit into the dividend?" In this case, we are trying to find how many times 5670 fits into 2.435.
When we perform the division, we get the result of 0.000426. This means that 5670, when multiplied by 0.000426, will give us 2.435. Or in other words, 5670 fits into 2.435 4.26*10^-4 times.
Another way to think about it is that 2.435 is a very small number when compared to 5670, hence when we divide it by 5670 the quotient is a decimal number which is very close to zero (0.000426)
In this case, the specific number is too small to be represented as a whole number, it is represented as a decimal number with 4 digits after the decimal point.