One verse

Srimad Bhagavatam 10.90.41

10.90.41

तिस्र: कोट्य: सहस्राणामष्टाशीतिशतानि च । आसन् यदुकुलाचार्या: कुमाराणामिति श्रुतम् ॥ ४१ ॥

tisraḥ koṭyaḥ sahasrāṇām aṣṭāśīti-śatāni ca āsan yadu-kulācāryāḥ kumārāṇām iti śrutam

tisraḥ
three
koṭyaḥ
(times) ten million
sahasrāṇām
thousand
aṣṭā-aśīti
eighty-eight
śatāni
hundreds
ca
and
āsan
were
yadu-kula
of the Yadu family
ācāryāḥ
teachers
kumārāṇām
for the children
iti
thus
śrutam
has been heard

I have heard from authoritative sources that the Yadu family employed 38,800,000 teachers just to educate their children.