Example

3(r+2s)=2t-4
a⋅(b-2)=3b
3(r+2s)=2t-4
a⋅(b-2)=3b

Question

$$\begin{aligned}1280&\\ \underline{\times72}&\end{aligned}$$

Answer

92160

Solution


Use the algorithm method.
1280
×72
1
2560
15
89600
11
92160
Therefore, \(1280\times 72=92160\).
\[92160\]
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