1.7 Lösning 6c

\[ {25 \cdot 10\,^{-3} \over 5 \cdot 10\,^{-5}}\, \cdot \,10\,^{-2} \, = \, 5 \cdot {10\,^{-3} \over 10\,^{-5}}\, \cdot \,10\,^{-2} \, = \, 5 \cdot 10\,^{-3-(-5)+(-2)} \, = \, \]

\[= \, 5 \cdot 10\,^{-3+5-2} \, = \, 5 \cdot 10\,^0 \, = \, 5 \cdot 1 \, = \, 5\]