



 
Hi Dan. If this is prealgebra, then just multiply 7 by 7 and keep Then break down your problem into pieces of that size or smaller. Now turn to pen and paper to complete it. Here's an example. I want to calculate 6^{22} using my 8digit calculator. First I use my calculator to see how far I get before it runs out of room: So I got to 60466176 using 10 sixes. So 6^{10} = 60466176. Remember the rules of exponents. 6^{22} = 6^{2} x 6^{10} x 6^{10}. That breaks it down into smaller pieces. So that means 6^{22} = 36 x 60466176 x 60466176 Now I turn to pen and paper to multiply the final result by hand (carefully!) I get 131621703842267136. Now you can try with 7^{23}. Hope this helps,  


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