Mr Tan has some amount of money. If he distributes equally to 2 persons, he left with $1.
If he distributes equally to 3 persons, he left with $2.
If he distributes equally to 4 persons, he left with $3.
If he distributes equally to 5 persons, he left with $4.
If he distributes equally to 6 persons, he left with $5.
If he distributes equally to 7 persons, he left with $6.
If he distributes equally to 8 persons, he left with $7.
If he distributes equally to 9 persons, he left with $8.
If he distributes equally to 10 persons, he left with $9.
Find what is the amount of money does Mr Tan have?