But compute: \( 169 + 225 = 394 \), \( 2 \cdot 13 \cdot 15 = 390 \), \( 390 \cdot 0.5 = 195 \), so \( 394 - 195 = 199 \).

Sat, 02 May 2026 19:38:49 +0000

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