synchronicity problem with javascript working with mongodb

var inputStream = fs.createReadStream(".xxx.csv",'utf8');
inputStream.pipe(new csvReader({parseNumbers:true,parseBooleans:true,trim:true}))
.on('data',function(row){
   console.log("row ",row);
   var no = parseInt(row[0]);
   if(Number.isInteger(no)){
    console.log(no);
    marks.find({"id":no}).toArray(function(err,result){
        console.log("entered marks block");
        result.forEach(r =>{
            updateSubjects(res,row);
            //break;
        });
        console.log("exited marks block")
    });
    console.log("exited if");
   }
})
.on('end',function(){
    console.log('No more rows!');
});
console.log("exited upload Data");

I want to get the ID from the excel and want to query the mongodb with the no., but it is not going to the marks block query of mongodb. I knew it is some problem related to async/await and promise, but not sure how to fix this and can’t understand it. Can someone explain me the solution.

Out put is :

1. entering the uploadData.
2. displaying the id from excel row.
   3.. exited the if block.
   Not entering the “entered marks block”.
   Then iterating to the next row and so on…