YOU SAID:
i had eleven children last month
INTO JAPANESE
私は先月11人の子供がいました
BACK INTO ENGLISH
I had 11 kids last month
INTO JAPANESE
先月は11人の子供がいました
BACK INTO ENGLISH
Last month I had 11 children
INTO JAPANESE
先月私には11人の子供がいました
BACK INTO ENGLISH
Last month I had 11 children
Well done, yes, well done!