Transaction

[Error Code: 1101] cadence runtime error Execution failed:
error: underflow
  --> 19cd203cf5ca651a205ed2b5f07a31ecf2f5193184e816ebe236e2999ccdfc76:13:8
   |
13 |         let f1 = fee * I1B2sqr / scale * I2B1sqr / scale - I1B2;
   |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^