SB 9.23.32

tasya patnī-sahasrāṇāṁ
 daśānāṁ sumahā-yaśāḥ
daśa-lakṣa-sahasrāṇi
 putrāṇāṁ tāsv ajījanat
Word for word: 
tasya — of Śaśabindu; patnī — wives; sahasrāṇām — of thousands; daśānām — ten; su-mahā-yaśāḥ — greatly famous; daśa — ten; lakṣa — lakhs (one lakh equals one hundred thousand); sahasrāṇi — thousands; putrāṇām — of sons; tāsu — in them; ajījanat — he begot.
Translation: 
The famous Śaśabindu had ten thousand wives, and by each he begot a lakh of sons. Therefore the number of his sons was ten thousand lakhs.