1) Any given task will not be accomplished without at least three interruptions. Some days each interruption is tripartite, resulting in nine interruptions per task intended.
2) Laundry produced by an adult is 1/3 the amount of laundry produced by a child. On rainy days, triple that proportion.
3) The more children are involved in baking, the more time it will take. The general rule in our house is 3x children = 3x baking time. It is also 3x the fun, IF and ONLY IF Mommy has resigned herself to this rule in advance. (We just baked muffins. It took us 90 minutes. But we definitely had fun.)
So, does baking muffins with nine children in the kitchen take 4.5 hours?