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Dividing in two steps
Level 3 · Hard A divisor that splits up (6 = 2 × 3) can be done as two easy divisions. Divisibility rules (even, sum of digits…) tell you where to start.
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Level 3 · Hard A divisor that splits up (6 = 2 × 3) can be done as two easy divisions. Divisibility rules (even, sum of digits…) tell you where to start.