[tex]\\ \sf\bull\longmapsto 0.0048[/tex]
- Beside 4 one by one digit with adding 10^{-1} per time
[tex]\\ \sf\bull\longmapsto 0.048\times 10^{-1}[/tex]
[tex]\\ \sf\bull\longmapsto 0.48\times 10^{-2}[/tex]
[tex]\\ \sf\bull\longmapsto 4.8\times 10^{-3}[/tex]
