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Good math+good math = learn to learn math, good, learn, what's the number?
Hundred: OK+count one.

Exactly = learning, so suppose 9xx+9xx is equal to 18xx.

Therefore, it is learned as "1"

Unit: Learning+Good = Learning

Explain what "0" is.

Learning+Numbers must be marked with "X"

X+ number = learning.

This equation doesn't hold water.

Learning, being good, calculating and learning are all equal to 0.