Write 0.000 054 376 in standard form.
Write 4.15 × 106 as an ordinary number.
Work out 4.1×105×7.3×1042×10−6\displaystyle \frac{4.1 \times 10^5 \times 7.3 \times 10^4}{2 \times 10^{-6}}2×10−64.1×105×7.3×104
