Transaction

[Error Code: 1101] cadence runtime error Execution failed:
error: underflow
  --> 49f7a4effdae511d91cdc23c32616c92be9a3fb8c5f6f7ed36dcded5fb300dff:13:8
   |
13 |         let f1 = fee * I1B2sqr / scale * I2B1sqr / scale - I1B2;
   |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^