Problem
\( c=\frac{2.8 \times 10^{19}+0.77 \times 10^{20}}{46 \times 10^{18}-0.031 \times 10^{21}} \)
Solution
Step 1 ：\( c=\frac{2.8 \times 10^{19}+0.77 \times 10^{20}}{46 \times 10^{18}-0.031 \times 10^{21}} \)
Step 2 ：\( c=\frac{2.8 \times 10^{19}+7.7 \times 10^{19}}{46 \times 10^{18}-3.1 \times 10^{19}} \)
Step 3 ：\( c=\frac{10.5 \times 10^{19}}{43 \times 10^{18}} \)
Step 4 ：\( c=2.4419 \times 10 \)
