Question

Find "a" using least calculations as you can do:
1111 × 1111 × 111 = a + 1/111 × 1111


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Answer 1

$1111 \times 1111 = a + \frac{1}{111} \times 1111$

$\frac{1111 \times 1111}{1111} = a + \frac{1}{111}$

$\frac{111a + 1}{111} = 1111$

$111a + 1 = 123321$

$111a = 123321 - 1 = 123320$

$a = \frac{123320}{111}$