Historical clue formulations

• "No sweat!" — 2026-07-08
• "It's a snap" — 2025-06-14
• "No problem at all" — 2023-04-07
• "So simple!" — 2022-10-10
• So simple ... like 17-, 24-, 40- and 52-Across? — 2021-10-25
• So simple — 2013-01-19