Since $\frac{8}{24800000000031}$ and $\frac{198400000000248}{24800000000031}$ have the same denominator, subtract them by subtracting their numerators.
Subtract $198400000000248$ from $8$ to get $-198400000000240$.
$$-\frac{198400000000240}{24800000000031}-0.125$$
Convert decimal number $0.125$ to fraction $\frac{125}{1000}$. Reduce the fraction $\frac{125}{1000}$ to lowest terms by extracting and canceling out $125$.
Least common multiple of $24800000000031$ and $8$ is $198400000000248$. Convert $-\frac{198400000000240}{24800000000031}$ and $\frac{1}{8}$ to fractions with denominator $198400000000248$.
Since $-\frac{1587200000001920}{198400000000248}$ and $\frac{24800000000031}{198400000000248}$ have the same denominator, subtract them by subtracting their numerators.
