JavaScript (Node.js), 43 bytes, port

(a,b,i)=>eval(`for(;a=10*(a%b),i--;)a/b|0`)

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JavaScript (Node.js), 51 bytes

(n,d,x)=>[...Array(x)].map(_=>[n*=10,u=n/d,n%=d])|u

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use Array rather than recursive to avoid stackoverflow

JavaScript (Node.js), 23 bytes

(a,b,i)=>a*10n**i/b%10n

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JavaScript (Node.js), 43 bytes, port

(a,b,i)=>eval(`for(;a=10*(a%b),i--;)a/b|0`)

Try it online!

JavaScript (Node.js), 51 bytes

(n,d,x)=>[...Array(x)].map(_=>[n*=10,u=n/d,n%=d])|u

Try it online!

use Array rather than recursive to avoid stackoverflow

JavaScript (Node.js), 43 bytes

(a,b,i)=>eval(`for(;a=10*(a%b),i--;)a/b|0`)

Try it online!

JavaScript (Node.js), 51 bytes

(n,d,x)=>[...Array(x)].map(_=>[n*=10,u=n/d,n%=d])|u

Try it online!

use Array rather than recursive to avoid stackoverflow

JavaScript (Node.js), 43 bytes, port

(a,b,i)=>eval(`for(;a=10*(a%b),i--;)a/b|0`)

Try it online!

JavaScript (Node.js), 51 bytes

(n,d,x)=>[...Array(x)].map(_=>[n*=10,u=n/d,n%=d])|u

Try it online!

use Array rather than recursive to avoid stackoverflow