instalment

noun
1
one of a number of payments that are made regularly over a period of time until something has been paid for
قسط, پرداخت قسطی, پرداخت اقساطی
2
one of the parts of a story that appears regularly over a period of time in a newspaper, on television, etc.
قسمت, بخش
The ‘Screwtape Letters’ were published in instalments from May to November 1941.
Now for the second instalment of our exclusive three-part series.
synonym episode