Answer:
Step-by-step explanation:
take each as fraction form:
[tex]\frac{4}{1} *\frac{4}{10} *\frac{4}{100} * \frac{2}{1000}[/tex]
Now multiply all denominator and numerators:
[tex]\frac{4*4*4*2}{1*10*100*1000} = \frac{128}{1000 000}[/tex]
Now simplify the fraction:
[tex]\frac{128}{1000000} = 0.000128[/tex] or 1.28 × 10^-4
