This is the 6232nd most frequent Russian word.
тщательно
Thoroughly.
Here, 'тщательно' modifies the verb 'prepared,' indicating that the preparation was done with attention to detail to ensure accuracy.
Доклад был тщательно подготовлен, чтобы избежать ошибок.
The report was carefully prepared to avoid mistakes.
In this context, 'тщательно' pertains to the verb 'checked,' implying that the checking process was done with great care and precision.
Она тщательно проверила все документы перед подачей.
She meticulously checked all the documents before submitting them.
In this sentence, 'тщательно' describes how the verb 'washed' was performed, emphasizing a comprehensive and meticulous action.