The total amount minus the down payment is multiplied by 1.5 and divided by 9. That is to say, if the price of 1400 is 500 in advance, then the remaining 900 times 1.5 will be divided by 9, and the monthly repayment should be 150.

Extended data:

Installment payment is mostly used for some product transactions with long production cycle and high cost. Such as complete sets of equipment, large vehicles, heavy mechanical equipment and other products. Installment payment means that after the import and export contract is signed, the importer pays a small part of the payment to the exporter as a down payment, and most of the rest is paid in installments after part or all of the products are produced and shipped, or after the goods are installed, debugged, invested and guaranteed.

The buyer and the seller sign a contract at the time of transaction, and the buyer pays the goods and services to the seller in installments within a certain period of time. The date and amount of each payment are stated in the contract in advance.

Installment payments are usually provided by banks and installment suppliers. Banks provide consumers with personal consumption loans equivalent to the amount of goods they buy, and consumers use the loans to pay their suppliers, who provide guarantees for consumers and bear irrevocable joint and several liabilities. Young people who spend by installment are often called "installment families".

References:

Installment payment-Baidu Encyclopedia